136980618 has 16 divisors (see below), whose sum is σ = 274561056. Its totient is φ = 45560240.

The previous prime is 136980593. The next prime is 136980643. The reversal of 136980618 is 816089631.

It is an interprime number because it is at equal distance from previous prime (136980593) and next prime (136980643).

It is a self number, because there is not a number n which added to its sum of digits gives 136980618.

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, 21996 + ... + 27527.

It is an arithmetic number, because the mean of its divisors is an integer number (17160066).

Almost surely, 2^136980618 is an apocalyptic number.

136980618 is an abundant number, since it is smaller than the sum of its proper divisors (137580438).

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

136980618 is a wasteful number, since it uses less digits than its factorization.

136980618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49989.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 136980618 is about 11703.8719234277. The cubic root of 136980618 is about 515.4893617295.

The spelling of 136980618 in words is "one hundred thirty-six million, nine hundred eighty thousand, six hundred eighteen".