149915388 has 24 divisors (see below), whose sum is σ = 399774592. Its totient is φ = 42832944.

The previous prime is 149915387. The next prime is 149915443. The reversal of 149915388 is 883519941.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149915387) 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 7 ways as a sum of consecutive naturals, for example, 892270 + ... + 892437.

Almost surely, 2^149915388 is an apocalyptic number.

It is an amenable number.

149915388 is an abundant number, since it is smaller than the sum of its proper divisors (249859204).

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

149915388 is a wasteful number, since it uses less digits than its factorization.

149915388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784721 (or 1784719 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 149915388 is about 12243.9939562220. The cubic root of 149915388 is about 531.2293617265.

The spelling of 149915388 in words is "one hundred forty-nine million, nine hundred fifteen thousand, three hundred eighty-eight".