18519470396 has 24 divisors (see below), whose sum is σ = 37243586016. Its totient is φ = 7893063360.

The previous prime is 18519470371. The next prime is 18519470413. The reversal of 18519470396 is 69307491581.

It is a congruent number.

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, 1822031 + ... + 1832166.

It is an arithmetic number, because the mean of its divisors is an integer number (1551816084).

Almost surely, 2^18519470396 is an apocalyptic number.

It is an amenable number.

18519470396 is an abundant number, since it is smaller than the sum of its proper divisors (18724115620).

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

18519470396 is a wasteful number, since it uses less digits than its factorization.

18519470396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654389 (or 3654387 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 18519470396 in words is "eighteen billion, five hundred nineteen million, four hundred seventy thousand, three hundred ninety-six".