2791973897 has 2 divisors, whose sum is σ = 2791973898. Its totient is φ = 2791973896.

The previous prime is 2791973857. The next prime is 2791973917. The reversal of 2791973897 is 7983791972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2789001721 + 2972176 = 52811^2 + 1724^2 .

It is a cyclic number.

It is not a de Polignac number, because 2791973897 - 2⁸ = 2791973641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2791973857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395986948 + 1395986949.

It is an arithmetic number, because the mean of its divisors is an integer number (1395986949).

Almost surely, 2^2791973897 is an apocalyptic number.

It is an amenable number.

2791973897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2791973897 is an equidigital number, since it uses as much as digits as its factorization.

2791973897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12002256, while the sum is 62.

The square root of 2791973897 is about 52839.1322506341. The cubic root of 2791973897 is about 1408.1117350703. Note that the first 3 decimals are identical.

The spelling of 2791973897 in words is "two billion, seven hundred ninety-one million, nine hundred seventy-three thousand, eight hundred ninety-seven".