389186694 has 80 divisors (see below), whose sum is σ = 943910352. Its totient is φ = 119143872.

The previous prime is 389186689. The next prime is 389186711. The reversal of 389186694 is 496681983.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 389186694.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 595672 + ... + 596324.

Almost surely, 2^389186694 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389186694, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471955176).

389186694 is an abundant number, since it is smaller than the sum of its proper divisors (554723658).

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

389186694 is a wasteful number, since it uses less digits than its factorization.

389186694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 954 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 389186694 is about 19727.8152363611. The cubic root of 389186694 is about 730.1061295626.

The spelling of 389186694 in words is "three hundred eighty-nine million, one hundred eighty-six thousand, six hundred ninety-four".