1368379257 has 32 divisors (see below), whose sum is σ = 2121600000. Its totient is φ = 768322368.

The previous prime is 1368379241. The next prime is 1368379261. The reversal of 1368379257 is 7529738631.

It is not a de Polignac number, because 1368379257 - 2⁴ = 1368379241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1368379357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 701119 + ... + 703067.

It is an arithmetic number, because the mean of its divisors is an integer number (66300000).

Almost surely, 2^1368379257 is an apocalyptic number.

It is an amenable number.

1368379257 is a deficient number, since it is larger than the sum of its proper divisors (753220743).

1368379257 is a wasteful number, since it uses less digits than its factorization.

1368379257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525.

The product of its digits is 1905120, while the sum is 51.

The square root of 1368379257 is about 36991.6106299793. The cubic root of 1368379257 is about 1110.2023971484.

The spelling of 1368379257 in words is "one billion, three hundred sixty-eight million, three hundred seventy-nine thousand, two hundred fifty-seven".