149121633 has 16 divisors (see below), whose sum is σ = 214401600. Its totient is φ = 91883520.

The previous prime is 149121629. The next prime is 149121653. The reversal of 149121633 is 336121941.

It is not a de Polignac number, because 149121633 - 2² = 149121629 is a prime.

It is a super-2 number, since 2×149121633² = 44474522857173378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149121633.

It is not an unprimeable number, because it can be changed into a prime (149121653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29568 + ... + 34241.

It is an arithmetic number, because the mean of its divisors is an integer number (13400100).

Almost surely, 2^149121633 is an apocalyptic number.

It is an amenable number.

149121633 is a deficient number, since it is larger than the sum of its proper divisors (65279967).

149121633 is a wasteful number, since it uses less digits than its factorization.

149121633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63872.

The product of its digits is 3888, while the sum is 30.

The square root of 149121633 is about 12211.5368811628. The cubic root of 149121633 is about 530.2901378064.

The spelling of 149121633 in words is "one hundred forty-nine million, one hundred twenty-one thousand, six hundred thirty-three".