1365605957 has 2 divisors, whose sum is σ = 1365605958. Its totient is φ = 1365605956.

The previous prime is 1365605881. The next prime is 1365605959. The reversal of 1365605957 is 7595065631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1363529476 + 2076481 = 36926^2 + 1441^2 .

It is a cyclic number.

It is not a de Polignac number, because 1365605957 - 2¹⁸ = 1365343813 is a prime.

Together with 1365605959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1365605959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682802978 + 682802979.

It is an arithmetic number, because the mean of its divisors is an integer number (682802979).

Almost surely, 2^1365605957 is an apocalyptic number.

It is an amenable number.

1365605957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365605957 is an equidigital number, since it uses as much as digits as its factorization.

1365605957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 850500, while the sum is 47.

The square root of 1365605957 is about 36954.1060912045. The cubic root of 1365605957 is about 1109.4518725989.

The spelling of 1365605957 in words is "one billion, three hundred sixty-five million, six hundred five thousand, nine hundred fifty-seven".