2292646921 has 2 divisors, whose sum is σ = 2292646922. Its totient is φ = 2292646920.

The previous prime is 2292646883. The next prime is 2292646927. The reversal of 2292646921 is 1296462922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1358733321 + 933913600 = 36861^2 + 30560^2 .

It is a cyclic number.

It is not a de Polignac number, because 2292646921 - 2¹⁹ = 2292122633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2292646927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1146323460 + 1146323461.

It is an arithmetic number, because the mean of its divisors is an integer number (1146323461).

Almost surely, 2^2292646921 is an apocalyptic number.

It is an amenable number.

2292646921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2292646921 is an equidigital number, since it uses as much as digits as its factorization.

2292646921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 2292646921 is about 47881.5927157817. The cubic root of 2292646921 is about 1318.5979375710.

The spelling of 2292646921 in words is "two billion, two hundred ninety-two million, six hundred forty-six thousand, nine hundred twenty-one".