116778618 has 32 divisors (see below), whose sum is σ = 283101120. Its totient is φ = 35387280.

The previous prime is 116778589. The next prime is 116778631. The reversal of 116778618 is 816877611.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97705 + ... + 98892.

It is an arithmetic number, because the mean of its divisors is an integer number (8846910).

Almost surely, 2^116778618 is an apocalyptic number.

116778618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

116778618 is an abundant number, since it is smaller than the sum of its proper divisors (166322502).

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

116778618 is a wasteful number, since it uses less digits than its factorization.

116778618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196619 (or 196613 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 116778618 is about 10806.4155944513. The cubic root of 116778618 is about 488.7886474193.

The spelling of 116778618 in words is "one hundred sixteen million, seven hundred seventy-eight thousand, six hundred eighteen".