140881618 has 16 divisors (see below), whose sum is σ = 235530720. Its totient is φ = 62807616.

The previous prime is 140881603. The next prime is 140881633. The reversal of 140881618 is 816188041.

140881618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (140881603) and next prime (140881633).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108396 + ... + 109687.

It is an arithmetic number, because the mean of its divisors is an integer number (14720670).

Almost surely, 2^140881618 is an apocalyptic number.

140881618 is a deficient number, since it is larger than the sum of its proper divisors (94649102).

140881618 is a wasteful number, since it uses less digits than its factorization.

140881618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218121.

The product of its (nonzero) digits is 12288, while the sum is 37.

The square root of 140881618 is about 11869.3562588710. The cubic root of 140881618 is about 520.3370817408.

The spelling of 140881618 in words is "one hundred forty million, eight hundred eighty-one thousand, six hundred eighteen".