18849270400 has 48 divisors (see below), whose sum is σ = 46563596190. Its totient is φ = 7539706880.

The previous prime is 18849270371. The next prime is 18849270403. The reversal of 18849270400 is 407294881.

It can be written as a sum of positive squares in 3 ways, for example, as 17735846976 + 1113423424 = 133176^2 + 33368^2 .

It is a super-2 number, since 2×18849270400² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18849270403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2941999 + ... + 2948398.

Almost surely, 2^18849270400 is an apocalyptic number.

18849270400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18849270400 is an abundant number, since it is smaller than the sum of its proper divisors (27714325790).

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

18849270400 is an equidigital number, since it uses as much as digits as its factorization.

18849270400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5890421 (or 5890404 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 18849270400 in words is "eighteen billion, eight hundred forty-nine million, two hundred seventy thousand, four hundred".