2611091957 has 2 divisors, whose sum is σ = 2611091958. Its totient is φ = 2611091956.

The previous prime is 2611091843. The next prime is 2611091981. The reversal of 2611091957 is 7591901162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2357199601 + 253892356 = 48551^2 + 15934^2 .

It is a cyclic number.

It is not a de Polignac number, because 2611091957 - 2¹⁸ = 2610829813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2611090957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305545978 + 1305545979.

It is an arithmetic number, because the mean of its divisors is an integer number (1305545979).

Almost surely, 2^2611091957 is an apocalyptic number.

It is an amenable number.

2611091957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2611091957 is an equidigital number, since it uses as much as digits as its factorization.

2611091957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 41.

The square root of 2611091957 is about 51098.8449673767. The cubic root of 2611091957 is about 1377.0215038270.

The spelling of 2611091957 in words is "two billion, six hundred eleven million, ninety-one thousand, nine hundred fifty-seven".