2815194157 has 2 divisors, whose sum is σ = 2815194158. Its totient is φ = 2815194156.

The previous prime is 2815194139. The next prime is 2815194197. The reversal of 2815194157 is 7514915182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2096632521 + 718561636 = 45789^2 + 26806^2 .

It is a cyclic number.

It is not a de Polignac number, because 2815194157 - 2¹⁵ = 2815161389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2815194197) 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, 1407597078 + 1407597079.

It is an arithmetic number, because the mean of its divisors is an integer number (1407597079).

Almost surely, 2^2815194157 is an apocalyptic number.

It is an amenable number.

2815194157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2815194157 is an equidigital number, since it uses as much as digits as its factorization.

2815194157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 43.

The square root of 2815194157 is about 53058.4032647045. The cubic root of 2815194157 is about 1412.0046192673.

The spelling of 2815194157 in words is "two billion, eight hundred fifteen million, one hundred ninety-four thousand, one hundred fifty-seven".