386736861 has 12 divisors (see below), whose sum is σ = 599836992. Its totient is φ = 220992408.

The previous prime is 386736827. The next prime is 386736869. The reversal of 386736861 is 168637683.

It is not a de Polignac number, because 386736861 - 2⁷ = 386736733 is a prime.

It is a super-2 number, since 2×386736861² = 299130799312266642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 386736861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386736869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1315285 + ... + 1315578.

It is an arithmetic number, because the mean of its divisors is an integer number (49986416).

Almost surely, 2^386736861 is an apocalyptic number.

It is an amenable number.

386736861 is a deficient number, since it is larger than the sum of its proper divisors (213100131).

386736861 is a wasteful number, since it uses less digits than its factorization.

386736861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630880 (or 2630873 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 386736861 is about 19665.6263820912. The cubic root of 386736861 is about 728.5709586475.

The spelling of 386736861 in words is "three hundred eighty-six million, seven hundred thirty-six thousand, eight hundred sixty-one".