18040436298 has 24 divisors (see below), whose sum is σ = 40348503936. Its totient is φ = 5819495400.

The previous prime is 18040436257. The next prime is 18040436303. The reversal of 18040436298 is 89263404081.

It is a happy number.

18040436298 is a `hidden beast` number, since 18 + 0 + 4 + 0 + 4 + 3 + 629 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16164708 + ... + 16165823.

It is an arithmetic number, because the mean of its divisors is an integer number (1681187664).

Almost surely, 2^18040436298 is an apocalyptic number.

18040436298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18040436298 is an abundant number, since it is smaller than the sum of its proper divisors (22308067638).

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

18040436298 is a wasteful number, since it uses less digits than its factorization.

18040436298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32330570 (or 32330567 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 18040436298 in words is "eighteen billion, forty million, four hundred thirty-six thousand, two hundred ninety-eight".