137745618 has 16 divisors (see below), whose sum is σ = 278220096. Its totient is φ = 45460400.

The previous prime is 137745613. The next prime is 137745623. The reversal of 137745618 is 816547731.

It is an interprime number because it is at equal distance from previous prime (137745613) and next prime (137745623).

It is a self number, because there is not a number n which added to its sum of digits gives 137745618.

It is not an unprimeable number, because it can be changed into a prime (137745613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113046 + ... + 114257.

It is an arithmetic number, because the mean of its divisors is an integer number (17388756).

Almost surely, 2^137745618 is an apocalyptic number.

137745618 is an abundant number, since it is smaller than the sum of its proper divisors (140474478).

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

137745618 is a wasteful number, since it uses less digits than its factorization.

137745618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227409.

The product of its digits is 141120, while the sum is 42.

The square root of 137745618 is about 11736.5079133446. The cubic root of 137745618 is about 516.4472040990.

The spelling of 137745618 in words is "one hundred thirty-seven million, seven hundred forty-five thousand, six hundred eighteen".