1799146440 has 192 divisors, whose sum is σ = 7196716800. Its totient is φ = 379593216.

The previous prime is 1799146439. The next prime is 1799146441. The reversal of 1799146440 is 446419971.

It is an interprime number because it is at equal distance from previous prime (1799146439) and next prime (1799146441).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1799146441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5301 + ... + 60219.

It is an arithmetic number, because the mean of its divisors is an integer number (37482900).

Almost surely, 2^1799146440 is an apocalyptic number.

1799146440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1799146440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3598358400).

1799146440 is an abundant number, since it is smaller than the sum of its proper divisors (5397570360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1799146440 is a wasteful number, since it uses less digits than its factorization.

1799146440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54956 (or 54949 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1799146440 is about 42416.3463773107. The cubic root of 1799146440 is about 1216.2480900347.

The spelling of 1799146440 in words is "one billion, seven hundred ninety-nine million, one hundred forty-six thousand, four hundred forty".