3124664861 has 2 divisors, whose sum is σ = 3124664862. Its totient is φ = 3124664860.

The previous prime is 3124664843. The next prime is 3124664867. The reversal of 3124664861 is 1684664213.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3124139236 + 525625 = 55894^2 + 725^2 .

It is an emirp because it is prime and its reverse (1684664213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3124664861 - 2¹⁰ = 3124663837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3124664867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562332430 + 1562332431.

It is an arithmetic number, because the mean of its divisors is an integer number (1562332431).

Almost surely, 2^3124664861 is an apocalyptic number.

It is an amenable number.

3124664861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3124664861 is an equidigital number, since it uses as much as digits as its factorization.

3124664861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 41.

The square root of 3124664861 is about 55898.7017827785. The cubic root of 3124664861 is about 1461.9566031110.

The spelling of 3124664861 in words is "three billion, one hundred twenty-four million, six hundred sixty-four thousand, eight hundred sixty-one".