2972980921 has 2 divisors, whose sum is σ = 2972980922. Its totient is φ = 2972980920.

The previous prime is 2972980909. The next prime is 2972980931. The reversal of 2972980921 is 1290892792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2091781696 + 881199225 = 45736^2 + 29685^2 .

It is a cyclic number.

It is not a de Polignac number, because 2972980921 - 2¹⁹ = 2972456633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2972980931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1486490460 + 1486490461.

It is an arithmetic number, because the mean of its divisors is an integer number (1486490461).

Almost surely, 2^2972980921 is an apocalyptic number.

It is an amenable number.

2972980921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2972980921 is an equidigital number, since it uses as much as digits as its factorization.

2972980921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 2972980921 is about 54525.0485648569. The cubic root of 2972980921 is about 1437.9067001586.

The spelling of 2972980921 in words is "two billion, nine hundred seventy-two million, nine hundred eighty thousand, nine hundred twenty-one".