149188490 has 16 divisors (see below), whose sum is σ = 292952160. Its totient is φ = 54250320.

The previous prime is 149188469. The next prime is 149188519. The reversal of 149188490 is 94881941.

149188490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678020 + ... + 678239.

It is an arithmetic number, because the mean of its divisors is an integer number (18309510).

Almost surely, 2^149188490 is an apocalyptic number.

149188490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149188490 is a deficient number, since it is larger than the sum of its proper divisors (143763670).

149188490 is a wasteful number, since it uses less digits than its factorization.

149188490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356277.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 149188490 is about 12214.2740267279. The cubic root of 149188490 is about 530.3693758305.

The spelling of 149188490 in words is "one hundred forty-nine million, one hundred eighty-eight thousand, four hundred ninety".