18969147528 has 64 divisors (see below), whose sum is σ = 48143452800. Its totient is φ = 6227228160.

The previous prime is 18969147511. The next prime is 18969147541. The reversal of 18969147528 is 82574196981.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1234533 + ... + 1249803.

It is an arithmetic number, because the mean of its divisors is an integer number (752241450).

Almost surely, 2^18969147528 is an apocalyptic number.

It is an amenable number.

18969147528 is an abundant number, since it is smaller than the sum of its proper divisors (29174305272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18969147528 is a wasteful number, since it uses less digits than its factorization.

18969147528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16062 (or 16058 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 60.

The spelling of 18969147528 in words is "eighteen billion, nine hundred sixty-nine million, one hundred forty-seven thousand, five hundred twenty-eight".