149493578 has 16 divisors (see below), whose sum is σ = 243258120. Its totient is φ = 68491776.

The previous prime is 149493569. The next prime is 149493611. The reversal of 149493578 is 875394941.

149493578 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 102475129 + 47018449 = 10123^2 + 6857^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17423 + ... + 24546.

Almost surely, 2^149493578 is an apocalyptic number.

149493578 is a deficient number, since it is larger than the sum of its proper divisors (93764542).

149493578 is a wasteful number, since it uses less digits than its factorization.

149493578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42121.

The product of its digits is 1088640, while the sum is 50.

The square root of 149493578 is about 12226.7566427078. The cubic root of 149493578 is about 530.7306618746.

The spelling of 149493578 in words is "one hundred forty-nine million, four hundred ninety-three thousand, five hundred seventy-eight".