149695523 has 16 divisors (see below), whose sum is σ = 166017600. Its totient is φ = 134255616.

The previous prime is 149695501. The next prime is 149695531. The reversal of 149695523 is 325596941.

It is a cyclic number.

It is not a de Polignac number, because 149695523 - 2¹² = 149691427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149695543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135911 + ... + 137007.

It is an arithmetic number, because the mean of its divisors is an integer number (10376100).

Almost surely, 2^149695523 is an apocalyptic number.

149695523 is a deficient number, since it is larger than the sum of its proper divisors (16322077).

149695523 is a wasteful number, since it uses less digits than its factorization.

149695523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486.

The product of its digits is 291600, while the sum is 44.

The square root of 149695523 is about 12235.0121781713. The cubic root of 149695523 is about 530.9695354104.

The spelling of 149695523 in words is "one hundred forty-nine million, six hundred ninety-five thousand, five hundred twenty-three".