19492594456 has 32 divisors (see below), whose sum is σ = 38482398000. Its totient is φ = 9230893056.

The previous prime is 19492594427. The next prime is 19492594487. The reversal of 19492594456 is 65449529491.

It is a super-2 number, since 2×19492594456² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19492594456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644440 + ... + 674008.

Almost surely, 2^19492594456 is an apocalyptic number.

It is an amenable number.

19492594456 is a deficient number, since it is larger than the sum of its proper divisors (18989803544).

19492594456 is a wasteful number, since it uses less digits than its factorization.

19492594456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33931 (or 33927 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 58.

The spelling of 19492594456 in words is "nineteen billion, four hundred ninety-two million, five hundred ninety-four thousand, four hundred fifty-six".