151861686 has 16 divisors (see below), whose sum is σ = 316929024. Its totient is φ = 48419624.

The previous prime is 151861651. The next prime is 151861691. The reversal of 151861686 is 686168151.

151861686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550086 + ... + 550361.

It is an arithmetic number, because the mean of its divisors is an integer number (19808064).

Almost surely, 2^151861686 is an apocalyptic number.

151861686 is an abundant number, since it is smaller than the sum of its proper divisors (165067338).

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

151861686 is a wasteful number, since it uses less digits than its factorization.

151861686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100475.

The product of its digits is 69120, while the sum is 42.

The square root of 151861686 is about 12323.2173558694. The cubic root of 151861686 is about 533.5184046080.

The spelling of 151861686 in words is "one hundred fifty-one million, eight hundred sixty-one thousand, six hundred eighty-six".