2112757957 has 2 divisors, whose sum is σ = 2112757958. Its totient is φ = 2112757956.

The previous prime is 2112757951. The next prime is 2112757961. The reversal of 2112757957 is 7597572112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2092696516 + 20061441 = 45746^2 + 4479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112757957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112757951) 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, 1056378978 + 1056378979.

It is an arithmetic number, because the mean of its divisors is an integer number (1056378979).

Almost surely, 2^2112757957 is an apocalyptic number.

It is an amenable number.

2112757957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112757957 is an equidigital number, since it uses as much as digits as its factorization.

2112757957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 308700, while the sum is 46.

The square root of 2112757957 is about 45964.7468936793. The cubic root of 2112757957 is about 1283.1671967914.

The spelling of 2112757957 in words is "two billion, one hundred twelve million, seven hundred fifty-seven thousand, nine hundred fifty-seven".