149193888 has 24 divisors (see below), whose sum is σ = 391634208. Its totient is φ = 49731264.

The previous prime is 149193881. The next prime is 149193899. The reversal of 149193888 is 888391941.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 149193888.

It is not an unprimeable number, because it can be changed into a prime (149193881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776956 + ... + 777147.

It is an arithmetic number, because the mean of its divisors is an integer number (16318092).

Almost surely, 2^149193888 is an apocalyptic number.

It is an amenable number.

149193888 is an abundant number, since it is smaller than the sum of its proper divisors (242440320).

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

149193888 is a wasteful number, since it uses less digits than its factorization.

149193888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554116 (or 1554108 counting only the distinct ones).

The product of its digits is 497664, while the sum is 51.

The square root of 149193888 is about 12214.4949957008. The cubic root of 149193888 is about 530.3757724352.

The spelling of 149193888 in words is "one hundred forty-nine million, one hundred ninety-three thousand, eight hundred eighty-eight".