140097618 has 24 divisors (see below), whose sum is σ = 313337856. Its totient is φ = 45192600.

The previous prime is 140097599. The next prime is 140097641. The reversal of 140097618 is 816790041.

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, 124978 + ... + 126093.

It is an arithmetic number, because the mean of its divisors is an integer number (13055744).

Almost surely, 2^140097618 is an apocalyptic number.

140097618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

140097618 is an abundant number, since it is smaller than the sum of its proper divisors (173240238).

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

140097618 is a wasteful number, since it uses less digits than its factorization.

140097618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251110 (or 251107 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 140097618 is about 11836.2839607708. The cubic root of 140097618 is about 519.3700680717.

It can be divided in two parts, 140097 and 618, that added together give a triangular number (140715 = T₅₃₀).

The spelling of 140097618 in words is "one hundred forty million, ninety-seven thousand, six hundred eighteen".