386812643 has 16 divisors (see below), whose sum is σ = 477204480. Its totient is φ = 306198816.

The previous prime is 386812633. The next prime is 386812669. The reversal of 386812643 is 346218683.

It is a happy number.

It is not a de Polignac number, because 386812643 - 2⁶ = 386812579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 386812643.

It is not an unprimeable number, because it can be changed into a prime (386812633) 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, 36755 + ... + 46092.

It is an arithmetic number, because the mean of its divisors is an integer number (29825280).

Almost surely, 2^386812643 is an apocalyptic number.

386812643 is a deficient number, since it is larger than the sum of its proper divisors (90391837).

386812643 is a wasteful number, since it uses less digits than its factorization.

386812643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82906.

The product of its digits is 165888, while the sum is 41.

The square root of 386812643 is about 19667.5530506466. The cubic root of 386812643 is about 728.6185439387.

The spelling of 386812643 in words is "three hundred eighty-six million, eight hundred twelve thousand, six hundred forty-three".