18598945000 has 40 divisors (see below), whose sum is σ = 43577339850. Its totient is φ = 7439576000.

The previous prime is 18598944983. The next prime is 18598945021. The reversal of 18598945000 is 54989581.

It can be written as a sum of positive squares in 5 ways, for example, as 11985444 + 18586959556 = 3462^2 + 136334^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×18598945000² (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 9 ways as a sum of consecutive naturals, for example, 1854895 + ... + 1864894.

Almost surely, 2^18598945000 is an apocalyptic number.

18598945000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18598945000 is an abundant number, since it is smaller than the sum of its proper divisors (24978394850).

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

18598945000 is an equidigital number, since it uses as much as digits as its factorization.

18598945000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719815 (or 3719796 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 49.

The spelling of 18598945000 in words is "eighteen billion, five hundred ninety-eight million, nine hundred forty-five thousand".