19475398504 has 8 divisors (see below), whose sum is σ = 36516372210. Its totient is φ = 9737699248.

The previous prime is 19475398493. The next prime is 19475398571. The reversal of 19475398504 is 40589357491.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18476964900 + 998433604 = 135930^2 + 31598^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×19475398504² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1217212399 + ... + 1217212414.

Almost surely, 2^19475398504 is an apocalyptic number.

It is an amenable number.

19475398504 is a deficient number, since it is larger than the sum of its proper divisors (17040973706).

19475398504 is a wasteful number, since it uses less digits than its factorization.

19475398504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434424819 (or 2434424815 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 19475398504 in words is "nineteen billion, four hundred seventy-five million, three hundred ninety-eight thousand, five hundred four".