19492039680 has 88 divisors (see below), whose sum is σ = 62344119792. Its totient is φ = 5197873152.

The previous prime is 19492039669. The next prime is 19492039709. The reversal of 19492039680 is 8693029491.

It is a super-2 number, since 2×19492039680² (a number of 21 digits) contains 22 as substring.

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, 619147 + ... + 649866.

Almost surely, 2^19492039680 is an apocalyptic number.

19492039680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19492039680 is an abundant number, since it is smaller than the sum of its proper divisors (42852080112).

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

19492039680 is a wasteful number, since it uses less digits than its factorization.

19492039680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269041 (or 1269023 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 19492039680 in words is "nineteen billion, four hundred ninety-two million, thirty-nine thousand, six hundred eighty".