2979373861 has 2 divisors, whose sum is σ = 2979373862. Its totient is φ = 2979373860.

The previous prime is 2979373751. The next prime is 2979373871. The reversal of 2979373861 is 1683739792.

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., 2931681025 + 47692836 = 54145^2 + 6906^2 .

It is a cyclic number.

It is not a de Polignac number, because 2979373861 - 2¹⁵ = 2979341093 is a prime.

It is a super-2 number, since 2×2979373861² = 17753337207220094642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2979373871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489686930 + 1489686931.

It is an arithmetic number, because the mean of its divisors is an integer number (1489686931).

Almost surely, 2^2979373861 is an apocalyptic number.

It is an amenable number.

2979373861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2979373861 is an equidigital number, since it uses as much as digits as its factorization.

2979373861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 55.

The square root of 2979373861 is about 54583.6409650364. The cubic root of 2979373861 is about 1438.9366282989.

The spelling of 2979373861 in words is "two billion, nine hundred seventy-nine million, three hundred seventy-three thousand, eight hundred sixty-one".