149551868 has 12 divisors (see below), whose sum is σ = 261801960. Its totient is φ = 74751312.

The previous prime is 149551847. The next prime is 149551889. The reversal of 149551868 is 868155941.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (149551847) and next prime (149551889).

It is a super-2 number, since 2×149551868² = 44731522444578848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18338 + ... + 25206.

It is an arithmetic number, because the mean of its divisors is an integer number (21816830).

Almost surely, 2^149551868 is an apocalyptic number.

It is an amenable number.

149551868 is a deficient number, since it is larger than the sum of its proper divisors (112250092).

149551868 is a wasteful number, since it uses less digits than its factorization.

149551868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12316 (or 12314 counting only the distinct ones).

The product of its digits is 345600, while the sum is 47.

The square root of 149551868 is about 12229.1401169502. The cubic root of 149551868 is about 530.7996331101.

The spelling of 149551868 in words is "one hundred forty-nine million, five hundred fifty-one thousand, eight hundred sixty-eight".