149916618 has 12 divisors (see below), whose sum is σ = 324819378. Its totient is φ = 49972200.

The previous prime is 149916607. The next prime is 149916647. The reversal of 149916618 is 816619941.

149916618 is a `hidden beast` number, since 14 + 9 + 9 + 16 + 618 = 666.

It can be written as a sum of positive squares in only one way, i.e., 78801129 + 71115489 = 8877^2 + 8433^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4164333 + ... + 4164368.

Almost surely, 2^149916618 is an apocalyptic number.

149916618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

149916618 is an abundant number, since it is smaller than the sum of its proper divisors (174902760).

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

149916618 is a wasteful number, since it uses less digits than its factorization.

149916618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8328709 (or 8328706 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 149916618 is about 12244.0441848272. The cubic root of 149916618 is about 531.2308145690.

It can be divided in two parts, 14991 and 6618, that added together give a square (21609 = 147²).

The spelling of 149916618 in words is "one hundred forty-nine million, nine hundred sixteen thousand, six hundred eighteen".