149091866 has 32 divisors (see below), whose sum is σ = 279410688. Its totient is φ = 57965040.

The previous prime is 149091851. The next prime is 149091883. The reversal of 149091866 is 668190941.

149091866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 113771 + ... + 115073.

It is an arithmetic number, because the mean of its divisors is an integer number (8731584).

Almost surely, 2^149091866 is an apocalyptic number.

149091866 is a deficient number, since it is larger than the sum of its proper divisors (130318822).

149091866 is a wasteful number, since it uses less digits than its factorization.

149091866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 149091866 is about 12210.3180138766. The cubic root of 149091866 is about 530.2548507354.

The spelling of 149091866 in words is "one hundred forty-nine million, ninety-one thousand, eight hundred sixty-six".