149885631 has 24 divisors (see below), whose sum is σ = 254121504. Its totient is φ = 83332800.

The previous prime is 149885611. The next prime is 149885639. The reversal of 149885631 is 136588941.

149885631 is a `hidden beast` number, since 1 + 4 + 9 + 8 + 8 + 5 + 631 = 666.

It is not a de Polignac number, because 149885631 - 2⁵ = 149885599 is a prime.

It is a super-2 number, since 2×149885631² = 44931404760536322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149885639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29820 + ... + 34481.

It is an arithmetic number, because the mean of its divisors is an integer number (10588396).

Almost surely, 2^149885631 is an apocalyptic number.

149885631 is a deficient number, since it is larger than the sum of its proper divisors (104235873).

149885631 is a wasteful number, since it uses less digits than its factorization.

149885631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64351 (or 64348 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 149885631 is about 12242.7787287037. The cubic root of 149885631 is about 531.1942111473.

The spelling of 149885631 in words is "one hundred forty-nine million, eight hundred eighty-five thousand, six hundred thirty-one".