1975533816 has 128 divisors (see below), whose sum is σ = 5348448000. Its totient is φ = 606154752.

The previous prime is 1975533799. The next prime is 1975533817. The reversal of 1975533816 is 6183355791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1975533817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2609310 + ... + 2610066.

It is an arithmetic number, because the mean of its divisors is an integer number (41784750).

Almost surely, 2^1975533816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1975533816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2674224000).

1975533816 is an abundant number, since it is smaller than the sum of its proper divisors (3372914184).

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

1975533816 is a wasteful number, since it uses less digits than its factorization.

1975533816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 937 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The square root of 1975533816 is about 44446.9775800335. The cubic root of 1975533816 is about 1254.7623801589.

The spelling of 1975533816 in words is "one billion, nine hundred seventy-five million, five hundred thirty-three thousand, eight hundred sixteen".