386893081 has 2 divisors, whose sum is σ = 386893082. Its totient is φ = 386893080.

The previous prime is 386893043. The next prime is 386893093. The reversal of 386893081 is 180398683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272745225 + 114147856 = 16515^2 + 10684^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386893081 is a prime.

It is a super-2 number, since 2×386893081² = 299372512251345122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (386893681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193446540 + 193446541.

It is an arithmetic number, because the mean of its divisors is an integer number (193446541).

Almost surely, 2^386893081 is an apocalyptic number.

It is an amenable number.

386893081 is a deficient number, since it is larger than the sum of its proper divisors (1).

386893081 is an equidigital number, since it uses as much as digits as its factorization.

386893081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 386893081 is about 19669.5978860779. The cubic root of 386893081 is about 728.6690460421.

The spelling of 386893081 in words is "three hundred eighty-six million, eight hundred ninety-three thousand, eighty-one".