149780931 has 16 divisors (see below), whose sum is σ = 212565024. Its totient is φ = 93487104.

The previous prime is 149780923. The next prime is 149780941. The reversal of 149780931 is 139087941.

It is a happy number.

It is not a de Polignac number, because 149780931 - 2³ = 149780923 is a prime.

It is a super-2 number, since 2×149780931² = 44868654582453522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149780941) 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, 2235 + ... + 17451.

It is an arithmetic number, because the mean of its divisors is an integer number (13285314).

Almost surely, 2^149780931 is an apocalyptic number.

149780931 is a deficient number, since it is larger than the sum of its proper divisors (62784093).

149780931 is a wasteful number, since it uses less digits than its factorization.

149780931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15430.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 149780931 is about 12238.5019916655. The cubic root of 149780931 is about 531.0704968450.

It can be divided in two parts, 1497 and 80931, that added together give a palindrome (82428).

The spelling of 149780931 in words is "one hundred forty-nine million, seven hundred eighty thousand, nine hundred thirty-one".