1655116361 has 2 divisors, whose sum is σ = 1655116362. Its totient is φ = 1655116360.

The previous prime is 1655116313. The next prime is 1655116367. The reversal of 1655116361 is 1636115561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1598400400 + 56715961 = 39980^2 + 7531^2 .

It is an emirp because it is prime and its reverse (1636115561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1655116361 - 2¹⁸ = 1654854217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1655116367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827558180 + 827558181.

It is an arithmetic number, because the mean of its divisors is an integer number (827558181).

Almost surely, 2^1655116361 is an apocalyptic number.

It is an amenable number.

1655116361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655116361 is an equidigital number, since it uses as much as digits as its factorization.

1655116361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 1655116361 is about 40683.1213281380. The cubic root of 1655116361 is about 1182.8858697170.

The spelling of 1655116361 in words is "one billion, six hundred fifty-five million, one hundred sixteen thousand, three hundred sixty-one".