389986731731 has 2 divisors, whose sum is σ = 389986731732. Its totient is φ = 389986731730.

The previous prime is 389986731727. The next prime is 389986731851. The reversal of 389986731731 is 137137689983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389986731731 - 2² = 389986731727 is a prime.

It is a super-2 number, since 2×389986731731² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (389986731331) 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 as a sum of consecutive naturals, namely, 194993365865 + 194993365866.

It is an arithmetic number, because the mean of its divisors is an integer number (194993365866).

Almost surely, 2^389986731731 is an apocalyptic number.

389986731731 is a deficient number, since it is larger than the sum of its proper divisors (1).

389986731731 is an equidigital number, since it uses as much as digits as its factorization.

389986731731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41150592, while the sum is 65.

The spelling of 389986731731 in words is "three hundred eighty-nine billion, nine hundred eighty-six million, seven hundred thirty-one thousand, seven hundred thirty-one".