1390193858639 has 8 divisors (see below), whose sum is σ = 1419918552000. Its totient is φ = 1360475252896.

The previous prime is 1390193858617. The next prime is 1390193858657. The reversal of 1390193858639 is 9368583910931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1390193858639 - 2⁴⁰ = 290682230863 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 (1390193858609) 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 7 ways as a sum of consecutive naturals, for example, 1058804 + ... + 1975209.

It is an arithmetic number, because the mean of its divisors is an integer number (177489819000).

Almost surely, 2^{1390193858639} is an apocalyptic number.

1390193858639 is a deficient number, since it is larger than the sum of its proper divisors (29724693361).

1390193858639 is an equidigital number, since it uses as much as digits as its factorization.

1390193858639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043809.

The product of its (nonzero) digits is 37791360, while the sum is 65.

The spelling of 1390193858639 in words is "one trillion, three hundred ninety billion, one hundred ninety-three million, eight hundred fifty-eight thousand, six hundred thirty-nine".