2999057981 has 2 divisors, whose sum is σ = 2999057982. Its totient is φ = 2999057980.

The previous prime is 2999057959. The next prime is 2999057989. The reversal of 2999057981 is 1897509992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2297284900 + 701773081 = 47930^2 + 26491^2 .

It is a cyclic number.

It is not a de Polignac number, because 2999057981 - 2⁶ = 2999057917 is a prime.

It is a super-2 number, since 2×2999057981² = 17988697546799592722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2999057981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2999057989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1499528990 + 1499528991.

It is an arithmetic number, because the mean of its divisors is an integer number (1499528991).

Almost surely, 2^2999057981 is an apocalyptic number.

It is an amenable number.

2999057981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2999057981 is an equidigital number, since it uses as much as digits as its factorization.

2999057981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 59.

The square root of 2999057981 is about 54763.6556577444. The cubic root of 2999057981 is about 1442.0985960042.

The spelling of 2999057981 in words is "two billion, nine hundred ninety-nine million, fifty-seven thousand, nine hundred eighty-one".