386868637 has 2 divisors, whose sum is σ = 386868638. Its totient is φ = 386868636.

The previous prime is 386868619. The next prime is 386868667. The reversal of 386868637 is 736868683.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253096281 + 133772356 = 15909^2 + 11566^2 .

It is a cyclic number.

It is not a de Polignac number, because 386868637 - 2⁷ = 386868509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386868607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193434318 + 193434319.

It is an arithmetic number, because the mean of its divisors is an integer number (193434319).

Almost surely, 2^386868637 is an apocalyptic number.

It is an amenable number.

386868637 is a deficient number, since it is larger than the sum of its proper divisors (1).

386868637 is an equidigital number, since it uses as much as digits as its factorization.

386868637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 55.

The square root of 386868637 is about 19668.9765112474. The cubic root of 386868637 is about 728.6536998891.

The spelling of 386868637 in words is "three hundred eighty-six million, eight hundred sixty-eight thousand, six hundred thirty-seven".