19457285642 has 16 divisors (see below), whose sum is σ = 29303793792. Its totient is φ = 9689379840.

The previous prime is 19457285633. The next prime is 19457285657. The reversal of 19457285642 is 24658275491.

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, 2447498 + ... + 2455434.

It is an arithmetic number, because the mean of its divisors is an integer number (1831487112).

Almost surely, 2^19457285642 is an apocalyptic number.

19457285642 is a deficient number, since it is larger than the sum of its proper divisors (9846508150).

19457285642 is a wasteful number, since it uses less digits than its factorization.

19457285642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12733.

The product of its digits is 4838400, while the sum is 53.

The spelling of 19457285642 in words is "nineteen billion, four hundred fifty-seven million, two hundred eighty-five thousand, six hundred forty-two".