136891916 has 12 divisors (see below), whose sum is σ = 273783888. Its totient is φ = 58667952.

The previous prime is 136891889. The next prime is 136891943. The reversal of 136891916 is 619198631.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (136891889) and next prime (136891943).

136891916 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2444471 + ... + 2444526.

It is an arithmetic number, because the mean of its divisors is an integer number (22815324).

Almost surely, 2^136891916 is an apocalyptic number.

It is an amenable number.

136891916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

136891916 is a wasteful number, since it uses less digits than its factorization.

136891916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889008 (or 4889006 counting only the distinct ones).

The product of its digits is 69984, while the sum is 44.

The square root of 136891916 is about 11700.0818800554. The cubic root of 136891916 is about 515.3780690728.

The spelling of 136891916 in words is "one hundred thirty-six million, eight hundred ninety-one thousand, nine hundred sixteen".