389650915986 has 16 divisors (see below), whose sum is σ = 781101610464. Its totient is φ = 129583675584.

The previous prime is 389650915981. The next prime is 389650915991. The reversal of 389650915986 is 689519056983.

It is an interprime number because it is at equal distance from previous prime (389650915981) and next prime (389650915991).

It is a self number, because there is not a number n which added to its sum of digits gives 389650915986.

It is not an unprimeable number, because it can be changed into a prime (389650915981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74987956 + ... + 74993151.

It is an arithmetic number, because the mean of its divisors is an integer number (48818850654).

Almost surely, 2^389650915986 is an apocalyptic number.

389650915986 is an abundant number, since it is smaller than the sum of its proper divisors (391450694478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389650915986 is a wasteful number, since it uses less digits than its factorization.

389650915986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149981545.

The product of its (nonzero) digits is 125971200, while the sum is 69.

The spelling of 389650915986 in words is "three hundred eighty-nine billion, six hundred fifty million, nine hundred fifteen thousand, nine hundred eighty-six".