2657181157 has 2 divisors, whose sum is σ = 2657181158. Its totient is φ = 2657181156.

The previous prime is 2657181127. The next prime is 2657181161. The reversal of 2657181157 is 7511817562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2284266436 + 372914721 = 47794^2 + 19311^2 .

It is a cyclic number.

It is not a de Polignac number, because 2657181157 - 2⁷ = 2657181029 is a prime.

It is a super-2 number, since 2×2657181157² = 14121223402231717298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2657181127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328590578 + 1328590579.

It is an arithmetic number, because the mean of its divisors is an integer number (1328590579).

Almost surely, 2^2657181157 is an apocalyptic number.

It is an amenable number.

2657181157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2657181157 is an equidigital number, since it uses as much as digits as its factorization.

2657181157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 43.

The square root of 2657181157 is about 51547.8530784746. The cubic root of 2657181157 is about 1385.0763740374.

The spelling of 2657181157 in words is "two billion, six hundred fifty-seven million, one hundred eighty-one thousand, one hundred fifty-seven".