1368368957 has 4 divisors (see below), whose sum is σ = 1368611520. Its totient is φ = 1368126396.

The previous prime is 1368368933. The next prime is 1368368977. The reversal of 1368368957 is 7598638631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1368368957 - 2¹⁰ = 1368367933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368368977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112613 + ... + 124170.

It is an arithmetic number, because the mean of its divisors is an integer number (342152880).

Almost surely, 2^1368368957 is an apocalyptic number.

It is an amenable number.

1368368957 is a deficient number, since it is larger than the sum of its proper divisors (242563).

1368368957 is an equidigital number, since it uses as much as digits as its factorization.

1368368957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242562.

The product of its digits is 6531840, while the sum is 56.

The square root of 1368368957 is about 36991.4714089613. The cubic root of 1368368957 is about 1110.1996115870.

The spelling of 1368368957 in words is "one billion, three hundred sixty-eight million, three hundred sixty-eight thousand, nine hundred fifty-seven".