19957363832 has 16 divisors (see below), whose sum is σ = 42765779760. Its totient is φ = 8553155904.

The previous prime is 19957363813. The next prime is 19957363837. The reversal of 19957363832 is 23836375991.

It is a happy number.

It is a super-2 number, since 2×19957363832² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 356381497 = 19957363832 / (1 + 9 + 9 + 5 + 7 + 3 + 6 + 3 + 8 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19957363837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178190693 + ... + 178190804.

It is an arithmetic number, because the mean of its divisors is an integer number (2672861235).

Almost surely, 2^19957363832 is an apocalyptic number.

It is an amenable number.

19957363832 is an abundant number, since it is smaller than the sum of its proper divisors (22808415928).

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

19957363832 is a wasteful number, since it uses less digits than its factorization.

19957363832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356381510 (or 356381506 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 56.

The spelling of 19957363832 in words is "nineteen billion, nine hundred fifty-seven million, three hundred sixty-three thousand, eight hundred thirty-two".