1655766313 has 2 divisors, whose sum is σ = 1655766314. Its totient is φ = 1655766312.

The previous prime is 1655766283. The next prime is 1655766319. The reversal of 1655766313 is 3136675561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1283932224 + 371834089 = 35832^2 + 19283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1655766313 is a prime.

It is a super-2 number, since 2×1655766313² = 5483124166531227938, 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 1655766313.

It is not a weakly prime, because it can be changed into another prime (1655766319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827883156 + 827883157.

It is an arithmetic number, because the mean of its divisors is an integer number (827883157).

Almost surely, 2^1655766313 is an apocalyptic number.

It is an amenable number.

1655766313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655766313 is an equidigital number, since it uses as much as digits as its factorization.

1655766313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 43.

The square root of 1655766313 is about 40691.1085250820. The cubic root of 1655766313 is about 1183.0406863088.

The spelling of 1655766313 in words is "one billion, six hundred fifty-five million, seven hundred sixty-six thousand, three hundred thirteen".