2610161891 has 2 divisors, whose sum is σ = 2610161892. Its totient is φ = 2610161890.

The previous prime is 2610161881. The next prime is 2610161899. The reversal of 2610161891 is 1981610162.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2610161891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2610161899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305080945 + 1305080946.

It is an arithmetic number, because the mean of its divisors is an integer number (1305080946).

Almost surely, 2^2610161891 is an apocalyptic number.

2610161891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2610161891 is an equidigital number, since it uses as much as digits as its factorization.

2610161891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 2610161891 is about 51089.7435010199. The cubic root of 2610161891 is about 1376.8579869285.

The spelling of 2610161891 in words is "two billion, six hundred ten million, one hundred sixty-one thousand, eight hundred ninety-one".