149583690 has 24 divisors (see below), whose sum is σ = 388917828. Its totient is φ = 39888960.

The previous prime is 149583673. The next prime is 149583757. The reversal of 149583690 is 96385941.

It is a happy number.

149583690 is a `hidden beast` number, since 1 + 4 + 9 + 583 + 69 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 141063129 + 8520561 = 11877^2 + 2919^2 .

It is a super-2 number, since 2×149583690² = 44750560628032200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 830931 + ... + 831110.

Almost surely, 2^149583690 is an apocalyptic number.

149583690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149583690 is an abundant number, since it is smaller than the sum of its proper divisors (239334138).

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

149583690 is a wasteful number, since it uses less digits than its factorization.

149583690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662054 (or 1662051 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 149583690 is about 12230.4411204175. The cubic root of 149583690 is about 530.8372787070.

The spelling of 149583690 in words is "one hundred forty-nine million, five hundred eighty-three thousand, six hundred ninety".