149595971 has 24 divisors (see below), whose sum is σ = 188225856. Its totient is φ = 118083840.

The previous prime is 149595959. The next prime is 149595977. The reversal of 149595971 is 179595941.

149595971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149595971 - 2¹⁰ = 149594947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149595977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37241 + ... + 41061.

It is an arithmetic number, because the mean of its divisors is an integer number (7842744).

Almost surely, 2^149595971 is an apocalyptic number.

149595971 is a deficient number, since it is larger than the sum of its proper divisors (38629885).

149595971 is a wasteful number, since it uses less digits than its factorization.

149595971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899 (or 3892 counting only the distinct ones).

The product of its digits is 510300, while the sum is 50.

The square root of 149595971 is about 12230.9431770408. The cubic root of 149595971 is about 530.8518057681.

The spelling of 149595971 in words is "one hundred forty-nine million, five hundred ninety-five thousand, nine hundred seventy-one".