149493915 has 24 divisors (see below), whose sum is σ = 261424800. Its totient is φ = 79021824.

The previous prime is 149493907. The next prime is 149493917. The reversal of 149493915 is 519394941.

149493915 is a `hidden beast` number, since 149 + 493 + 9 + 15 = 666.

It is not a de Polignac number, because 149493915 - 2³ = 149493907 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (149493917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9615 + ... + 19784.

It is an arithmetic number, because the mean of its divisors is an integer number (10892700).

Almost surely, 2^149493915 is an apocalyptic number.

149493915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

149493915 is a deficient number, since it is larger than the sum of its proper divisors (111930885).

149493915 is a wasteful number, since it uses less digits than its factorization.

149493915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29523 (or 29520 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 149493915 is about 12226.7704239509. The cubic root of 149493915 is about 530.7310606791.

The spelling of 149493915 in words is "one hundred forty-nine million, four hundred ninety-three thousand, nine hundred fifteen".