1316701657 has 18 divisors (see below), whose sum is σ = 1389324174. Its totient is φ = 1247598720.

The previous prime is 1316701627. The next prime is 1316701669. The reversal of 1316701657 is 7561076131.

It can be written as a sum of positive squares in 3 ways, for example, as 318836736 + 997864921 = 17856^2 + 31589^2 .

It is not a de Polignac number, because 1316701657 - 2¹¹ = 1316699609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1316701627) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9610893 + ... + 9611029.

Almost surely, 2^1316701657 is an apocalyptic number.

It is an amenable number.

1316701657 is a deficient number, since it is larger than the sum of its proper divisors (72622517).

1316701657 is an frugal number, since it uses more digits than its factorization.

1316701657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 1316701657 is about 36286.3839063636. The cubic root of 1316701657 is about 1096.0468729953.

Adding to 1316701657 its reverse (7561076131), we get a palindrome (8877777788).

It can be divided in two parts, 13 and 16701657, that multiplied together give a triangular number (217121541 = T₂₀₈₃₈).

The spelling of 1316701657 in words is "one billion, three hundred sixteen million, seven hundred one thousand, six hundred fifty-seven".