19642651204 has 24 divisors (see below), whose sum is σ = 37504460448. Its totient is φ = 8927322240.

The previous prime is 19642651201. The next prime is 19642651219. The reversal of 19642651204 is 40215624691.

It is not an unprimeable number, because it can be changed into a prime (19642651201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379932 + ... + 428524.

It is an arithmetic number, because the mean of its divisors is an integer number (1562685852).

Almost surely, 2^19642651204 is an apocalyptic number.

It is an amenable number.

19642651204 is a deficient number, since it is larger than the sum of its proper divisors (17861809244).

19642651204 is a wasteful number, since it uses less digits than its factorization.

19642651204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57795 (or 57793 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 19642651204 in words is "nineteen billion, six hundred forty-two million, six hundred fifty-one thousand, two hundred four".