3149997913 has 4 divisors (see below), whose sum is σ = 3286954368. Its totient is φ = 3013041460.

The previous prime is 3149997911. The next prime is 3149997937. The reversal of 3149997913 is 3197999413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3197999413 = 7 ⋅456857059.

It is a cyclic number.

It is not a de Polignac number, because 3149997913 - 2¹ = 3149997911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3149997911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68478193 + ... + 68478238.

It is an arithmetic number, because the mean of its divisors is an integer number (821738592).

Almost surely, 2^3149997913 is an apocalyptic number.

It is an amenable number.

3149997913 is a deficient number, since it is larger than the sum of its proper divisors (136956455).

3149997913 is a wasteful number, since it uses less digits than its factorization.

3149997913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136956454.

The product of its digits is 1653372, while the sum is 55.

The square root of 3149997913 is about 56124.8422091323. The cubic root of 3149997913 is about 1465.8968851398.

The spelling of 3149997913 in words is "three billion, one hundred forty-nine million, nine hundred ninety-seven thousand, nine hundred thirteen".