149151890 has 8 divisors (see below), whose sum is σ = 268473420. Its totient is φ = 59660752.

The previous prime is 149151889. The next prime is 149151917. The reversal of 149151890 is 98151941.

149151890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 124121881 + 25030009 = 11141^2 + 5003^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 7457585 + ... + 7457604.

Almost surely, 2^149151890 is an apocalyptic number.

149151890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149151890 is a deficient number, since it is larger than the sum of its proper divisors (119321530).

149151890 is a wasteful number, since it uses less digits than its factorization.

149151890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14915196.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 149151890 is about 12212.7756877788. The cubic root of 149151890 is about 530.3260009322.

The spelling of 149151890 in words is "one hundred forty-nine million, one hundred fifty-one thousand, eight hundred ninety".