18490011200 has 42 divisors (see below), whose sum is σ = 45496987746. Its totient is φ = 7396003840.

The previous prime is 18490011179. The next prime is 18490011209. The reversal of 18490011200 is 211009481.

It can be written as a sum of positive squares in 3 ways, for example, as 660284416 + 17829726784 = 25696^2 + 133528^2 .

It is a super-2 number, since 2×18490011200² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18490011200.

It is not an unprimeable number, because it can be changed into a prime (18490011209) 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, 5776529 + ... + 5779728.

It is an arithmetic number, because the mean of its divisors is an integer number (1083261613).

Almost surely, 2^18490011200 is an apocalyptic number.

18490011200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18490011200 is an abundant number, since it is smaller than the sum of its proper divisors (27006976546).

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

18490011200 is a wasteful number, since it uses less digits than its factorization.

18490011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11556279 (or 11556264 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 18490011200 in words is "eighteen billion, four hundred ninety million, eleven thousand, two hundred".