149316813 has 24 divisors (see below), whose sum is σ = 219922560. Its totient is φ = 97606080.

The previous prime is 149316799. The next prime is 149316829. The reversal of 149316813 is 318613941.

149316813 is a `hidden beast` number, since 1 + 493 + 168 + 1 + 3 = 666.

149316813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149316813 - 2⁵ = 149316781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149316833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104220 + ... + 105642.

It is an arithmetic number, because the mean of its divisors is an integer number (9163440).

Almost surely, 2^149316813 is an apocalyptic number.

It is an amenable number.

149316813 is a deficient number, since it is larger than the sum of its proper divisors (70605747).

149316813 is a wasteful number, since it uses less digits than its factorization.

149316813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1646 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 149316813 is about 12219.5258909665. The cubic root of 149316813 is about 530.5213962387.

The spelling of 149316813 in words is "one hundred forty-nine million, three hundred sixteen thousand, eight hundred thirteen".