19492461458 has 18 divisors (see below), whose sum is σ = 29427974901. Its totient is φ = 9683541624.

The previous prime is 19492461433. The next prime is 19492461463. The reversal of 19492461458 is 85416429491.

It can be written as a sum of positive squares in 2 ways, for example, as 14578872049 + 4913589409 = 120743^2 + 70097^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=98723.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 53112791 + ... + 53113157.

Almost surely, 2^19492461458 is an apocalyptic number.

19492461458 is a deficient number, since it is larger than the sum of its proper divisors (9935513443).

19492461458 is an frugal number, since it uses more digits than its factorization.

19492461458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 638 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 53.

The spelling of 19492461458 in words is "nineteen billion, four hundred ninety-two million, four hundred sixty-one thousand, four hundred fifty-eight".