149643864 has 48 divisors (see below), whose sum is σ = 413917920. Its totient is φ = 48818880.

The previous prime is 149643863. The next prime is 149643881. The reversal of 149643864 is 468346941.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149643863) 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 11 ways as a sum of consecutive naturals, for example, 18727 + ... + 25494.

It is an arithmetic number, because the mean of its divisors is an integer number (8623290).

Almost surely, 2^149643864 is an apocalyptic number.

It is an amenable number.

149643864 is an abundant number, since it is smaller than the sum of its proper divisors (264274056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149643864 is a wasteful number, since it uses less digits than its factorization.

149643864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44280 (or 44273 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 149643864 is about 12232.9008824563. The cubic root of 149643864 is about 530.9084502813.

The spelling of 149643864 in words is "one hundred forty-nine million, six hundred forty-three thousand, eight hundred sixty-four".