149312651 has 4 divisors (see below), whose sum is σ = 149482632. Its totient is φ = 149142672.

The previous prime is 149312633. The next prime is 149312699. The reversal of 149312651 is 156213941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149312651 - 2⁶ = 149312587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149312551) 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 3 ways as a sum of consecutive naturals, for example, 83666 + ... + 85431.

It is an arithmetic number, because the mean of its divisors is an integer number (37370658).

Almost surely, 2^149312651 is an apocalyptic number.

149312651 is a deficient number, since it is larger than the sum of its proper divisors (169981).

149312651 is an equidigital number, since it uses as much as digits as its factorization.

149312651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169980.

The product of its digits is 6480, while the sum is 32.

The square root of 149312651 is about 12219.3555885734. The cubic root of 149312651 is about 530.5164670091.

The spelling of 149312651 in words is "one hundred forty-nine million, three hundred twelve thousand, six hundred fifty-one".