386158961 has 4 divisors (see below), whose sum is σ = 408874212. Its totient is φ = 363443712.

The previous prime is 386158957. The next prime is 386158999. The reversal of 386158961 is 169851683.

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

It can be written as a sum of positive squares in 2 ways, for example, as 197233936 + 188925025 = 14044^2 + 13745^2 .

It is a cyclic number.

It is not a de Polignac number, because 386158961 - 2² = 386158957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386158921) 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, 11357600 + ... + 11357633.

It is an arithmetic number, because the mean of its divisors is an integer number (102218553).

Almost surely, 2^386158961 is an apocalyptic number.

It is an amenable number.

386158961 is a deficient number, since it is larger than the sum of its proper divisors (22715251).

386158961 is a wasteful number, since it uses less digits than its factorization.

386158961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22715250.

The product of its digits is 311040, while the sum is 47.

The square root of 386158961 is about 19650.9277389135. The cubic root of 386158961 is about 728.2078771020.

The spelling of 386158961 in words is "three hundred eighty-six million, one hundred fifty-eight thousand, nine hundred sixty-one".