386918913 has 16 divisors (see below), whose sum is σ = 525071552. Its totient is φ = 253368000.

The previous prime is 386918911. The next prime is 386918923. The reversal of 386918913 is 319819683.

It is not a de Polignac number, because 386918913 - 2¹ = 386918911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386918911) 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, 251958 + ... + 253488.

It is an arithmetic number, because the mean of its divisors is an integer number (32816972).

Almost surely, 2^386918913 is an apocalyptic number.

It is an amenable number.

386918913 is a deficient number, since it is larger than the sum of its proper divisors (138152639).

386918913 is a wasteful number, since it uses less digits than its factorization.

386918913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976.

The product of its digits is 279936, while the sum is 48.

The square root of 386918913 is about 19670.2545230101. The cubic root of 386918913 is about 728.6852628910.

The spelling of 386918913 in words is "three hundred eighty-six million, nine hundred eighteen thousand, nine hundred thirteen".