2258109961 has 2 divisors, whose sum is σ = 2258109962. Its totient is φ = 2258109960.

The previous prime is 2258109941. The next prime is 2258110003. The reversal of 2258109961 is 1699018522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1348725625 + 909384336 = 36725^2 + 30156^2 .

It is a cyclic number.

It is not a de Polignac number, because 2258109961 - 2⁹ = 2258109449 is a prime.

It is not a weakly prime, because it can be changed into another prime (2258109901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1129054980 + 1129054981.

It is an arithmetic number, because the mean of its divisors is an integer number (1129054981).

Almost surely, 2^2258109961 is an apocalyptic number.

It is an amenable number.

2258109961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2258109961 is an equidigital number, since it uses as much as digits as its factorization.

2258109961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 2258109961 is about 47519.5745035664. The cubic root of 2258109961 is about 1311.9431878610.

The spelling of 2258109961 in words is "two billion, two hundred fifty-eight million, one hundred nine thousand, nine hundred sixty-one".