18240940098 has 32 divisors (see below), whose sum is σ = 41524096320. Its totient is φ = 5932012320.

The previous prime is 18240940061. The next prime is 18240940103. The reversal of 18240940098 is 89004904281.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4117240 + ... + 4121667.

It is an arithmetic number, because the mean of its divisors is an integer number (1297628010).

Almost surely, 2^18240940098 is an apocalyptic number.

18240940098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18240940098 is an abundant number, since it is smaller than the sum of its proper divisors (23283156222).

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

18240940098 is a wasteful number, since it uses less digits than its factorization.

18240940098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8238959 (or 8238953 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 18240940098 in words is "eighteen billion, two hundred forty million, nine hundred forty thousand, ninety-eight".