122988618 has 24 divisors (see below), whose sum is σ = 276345888. Its totient is φ = 40996044.

The previous prime is 122988601. The next prime is 122988637. The reversal of 122988618 is 816889221.

It is a happy number.

122988618 is a `hidden beast` number, since 1 + 2 + 29 + 8 + 8 + 618 = 666.

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, 126046 + ... + 127017.

It is an arithmetic number, because the mean of its divisors is an integer number (11514412).

Almost surely, 2^122988618 is an apocalyptic number.

122988618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

122988618 is an abundant number, since it is smaller than the sum of its proper divisors (153357270).

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

122988618 is an equidigital number, since it uses as much as digits as its factorization.

122988618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253080 (or 253068 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 122988618 is about 11090.0233543487. The cubic root of 122988618 is about 497.3036427868.

The spelling of 122988618 in words is "one hundred twenty-two million, nine hundred eighty-eight thousand, six hundred eighteen".