1390579257868 has 12 divisors (see below), whose sum is σ = 2517427967040. Its totient is φ = 671314124432.

The previous prime is 1390579257863. The next prime is 1390579257877. The reversal of 1390579257868 is 8687529750931.

It is a junction number, because it is equal to n+sod(n) for n = 1390579257797 and 1390579257806.

It is not an unprimeable number, because it can be changed into a prime (1390579257863) 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 3 ways as a sum of consecutive naturals, for example, 5993875996 + ... + 5993876227.

It is an arithmetic number, because the mean of its divisors is an integer number (209785663920).

Almost surely, 2^{1390579257868} is an apocalyptic number.

It is an amenable number.

1390579257868 is a deficient number, since it is larger than the sum of its proper divisors (1126848709172).

1390579257868 is a wasteful number, since it uses less digits than its factorization.

1390579257868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11987752256 (or 11987752254 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 70.

The spelling of 1390579257868 in words is "one trillion, three hundred ninety billion, five hundred seventy-nine million, two hundred fifty-seven thousand, eight hundred sixty-eight".