19604337985 has 32 divisors (see below), whose sum is σ = 24696524160. Its totient is φ = 14925580800.

The previous prime is 19604337971. The next prime is 19604338007. The reversal of 19604337985 is 58973340691.

It is not a de Polignac number, because 19604337985 - 2¹³ = 19604329793 is a prime.

It is a super-2 number, since 2×19604337985² (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 31 ways as a sum of consecutive naturals, for example, 1578259 + ... + 1590631.

It is an arithmetic number, because the mean of its divisors is an integer number (771766380).

Almost surely, 2^19604337985 is an apocalyptic number.

It is an amenable number.

19604337985 is a deficient number, since it is larger than the sum of its proper divisors (5092186175).

19604337985 is a wasteful number, since it uses less digits than its factorization.

19604337985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12609.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 19604337985 in words is "nineteen billion, six hundred four million, three hundred thirty-seven thousand, nine hundred eighty-five".