1369657957 has 2 divisors, whose sum is σ = 1369657958. Its totient is φ = 1369657956.

The previous prime is 1369657943. The next prime is 1369657999. The reversal of 1369657957 is 7597569631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1359101956 + 10556001 = 36866^2 + 3249^2 .

It is an emirp because it is prime and its reverse (7597569631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1369657957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1369657057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684828978 + 684828979.

It is an arithmetic number, because the mean of its divisors is an integer number (684828979).

Almost surely, 2^1369657957 is an apocalyptic number.

It is an amenable number.

1369657957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1369657957 is an equidigital number, since it uses as much as digits as its factorization.

1369657957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10716300, while the sum is 58.

The square root of 1369657957 is about 37008.8902427511. The cubic root of 1369657957 is about 1110.5481038995.

The spelling of 1369657957 in words is "one billion, three hundred sixty-nine million, six hundred fifty-seven thousand, nine hundred fifty-seven".