18949447596 has 24 divisors (see below), whose sum is σ = 46816282800. Its totient is φ = 5944924672.

The previous prime is 18949447577. The next prime is 18949447597. The reversal of 18949447596 is 69574494981.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18949447597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46444521 + ... + 46444928.

It is an arithmetic number, because the mean of its divisors is an integer number (1950678450).

Almost surely, 2^18949447596 is an apocalyptic number.

It is an amenable number.

18949447596 is an abundant number, since it is smaller than the sum of its proper divisors (27866835204).

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

18949447596 is a wasteful number, since it uses less digits than its factorization.

18949447596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92889473 (or 92889471 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 66.

The spelling of 18949447596 in words is "eighteen billion, nine hundred forty-nine million, four hundred forty-seven thousand, five hundred ninety-six".