386168691 has 4 divisors (see below), whose sum is σ = 514891592. Its totient is φ = 257445792.

The previous prime is 386168677. The next prime is 386168701. The reversal of 386168691 is 196861683.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 386168691 - 2¹¹ = 386166643 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 386168691.

It is not an unprimeable number, because it can be changed into a prime (386168291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64361446 + ... + 64361451.

It is an arithmetic number, because the mean of its divisors is an integer number (128722898).

Almost surely, 2^386168691 is an apocalyptic number.

386168691 is a deficient number, since it is larger than the sum of its proper divisors (128722901).

386168691 is a wasteful number, since it uses less digits than its factorization.

386168691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128722900.

The product of its digits is 373248, while the sum is 48.

The square root of 386168691 is about 19651.1753083626. The cubic root of 386168691 is about 728.2139932388.

The spelling of 386168691 in words is "three hundred eighty-six million, one hundred sixty-eight thousand, six hundred ninety-one".