8631149413 has 4 divisors (see below), whose sum is σ = 8710334380. Its totient is φ = 8551964448.

The previous prime is 8631149393. The next prime is 8631149459. The reversal of 8631149413 is 3149411368.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6300866884 + 2330282529 = 79378^2 + 48273^2 .

It is a cyclic number.

It is not a de Polignac number, because 8631149413 - 2⁵ = 8631149381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8631449413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39592320 + ... + 39592537.

It is an arithmetic number, because the mean of its divisors is an integer number (2177583595).

Almost surely, 2^8631149413 is an apocalyptic number.

It is an amenable number.

8631149413 is a deficient number, since it is larger than the sum of its proper divisors (79184967).

8631149413 is a wasteful number, since it uses less digits than its factorization.

8631149413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79184966.

The product of its digits is 62208, while the sum is 40.

The square root of 8631149413 is about 92903.9795326336. The cubic root of 8631149413 is about 2051.2702350144.

The spelling of 8631149413 in words is "eight billion, six hundred thirty-one million, one hundred forty-nine thousand, four hundred thirteen".