1656502157 has 2 divisors, whose sum is σ = 1656502158. Its totient is φ = 1656502156.

The previous prime is 1656502147. The next prime is 1656502187. The reversal of 1656502157 is 7512056561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 922579876 + 733922281 = 30374^2 + 27091^2 .

It is a cyclic number.

It is not a de Polignac number, because 1656502157 - 2⁶ = 1656502093 is a prime.

It is a super-2 number, since 2×1656502157² = 5487998792291305298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1656502157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1656502147) 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, 828251078 + 828251079.

It is an arithmetic number, because the mean of its divisors is an integer number (828251079).

Almost surely, 2^1656502157 is an apocalyptic number.

It is an amenable number.

1656502157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656502157 is an equidigital number, since it uses as much as digits as its factorization.

1656502157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 1656502157 is about 40700.1493486203. The cubic root of 1656502157 is about 1183.2159132228.

The spelling of 1656502157 in words is "one billion, six hundred fifty-six million, five hundred two thousand, one hundred fifty-seven".