18797723000 has 96 divisors (see below), whose sum is σ = 51168302640. Its totient is φ = 6444916800.

The previous prime is 18797722997. The next prime is 18797723029. The reversal of 18797723000 is 32779781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142814 + ... + 240813.

Almost surely, 2^18797723000 is an apocalyptic number.

18797723000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18797723000 is an abundant number, since it is smaller than the sum of its proper divisors (32370579640).

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

18797723000 is a wasteful number, since it uses less digits than its factorization.

18797723000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383662 (or 383641 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 44.

The spelling of 18797723000 in words is "eighteen billion, seven hundred ninety-seven million, seven hundred twenty-three thousand".