1945671336 has 96 divisors (see below), whose sum is σ = 6104928960. Its totient is φ = 548280576.

The previous prime is 1945671323. The next prime is 1945671367. The reversal of 1945671336 is 6331765491.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1945671291 and 1945671300.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 10351 + ... + 63233.

It is an arithmetic number, because the mean of its divisors is an integer number (63593010).

Almost surely, 2^1945671336 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 1945671336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3052464480).

1945671336 is an abundant number, since it is smaller than the sum of its proper divisors (4159257624).

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

1945671336 is a wasteful number, since it uses less digits than its factorization.

1945671336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52975 (or 52968 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 1945671336 is about 44109.7646332419. The cubic root of 1945671336 is about 1248.4078579413.

The spelling of 1945671336 in words is "one billion, nine hundred forty-five million, six hundred seventy-one thousand, three hundred thirty-six".