149228613 has 6 divisors (see below), whose sum is σ = 215552454. Its totient is φ = 99485736.

The previous prime is 149228543. The next prime is 149228621. The reversal of 149228613 is 316822941.

149228613 is a `hidden beast` number, since 14 + 9 + 2 + 28 + 613 = 666.

It can be written as a sum of positive squares in only one way, i.e., 139287204 + 9941409 = 11802^2 + 3153^2 .

It is not a de Polignac number, because 149228613 - 2²⁰ = 148180037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149228633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8290470 + ... + 8290487.

It is an arithmetic number, because the mean of its divisors is an integer number (35925409).

Almost surely, 2^149228613 is an apocalyptic number.

It is an amenable number.

149228613 is a deficient number, since it is larger than the sum of its proper divisors (66323841).

149228613 is a wasteful number, since it uses less digits than its factorization.

149228613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16580963 (or 16580960 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 149228613 is about 12215.9163798710. The cubic root of 149228613 is about 530.4169177087.

The spelling of 149228613 in words is "one hundred forty-nine million, two hundred twenty-eight thousand, six hundred thirteen".