1390392816563 has 16 divisors (see below), whose sum is σ = 1474640443584. Its totient is φ = 1306420254720.

The previous prime is 1390392816539. The next prime is 1390392816577. The reversal of 1390392816563 is 3656182930931.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1390392816563 - 2¹⁴ = 1390392800179 is a prime.

It is a super-3 number, since 3×1390392816563³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1390392816499 and 1390392816508.

It is not an unprimeable number, because it can be changed into a prime (1390392876563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26621531 + ... + 26673707.

It is an arithmetic number, because the mean of its divisors is an integer number (92165027724).

Almost surely, 2^{1390392816563} is an apocalyptic number.

1390392816563 is a deficient number, since it is larger than the sum of its proper divisors (84247627021).

1390392816563 is a wasteful number, since it uses less digits than its factorization.

1390392816563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54782.

The product of its (nonzero) digits is 6298560, while the sum is 56.

The spelling of 1390392816563 in words is "one trillion, three hundred ninety billion, three hundred ninety-two million, eight hundred sixteen thousand, five hundred sixty-three".