395131564 has 12 divisors (see below), whose sum is σ = 696528504. Its totient is φ = 196123424.

The previous prime is 395131469. The next prime is 395131567. The reversal of 395131564 is 465131593.

It is a happy number.

It is a super-2 number, since 2×395131564² = 312257905738172192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (395131567) 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, 359974 + ... + 361069.

It is an arithmetic number, because the mean of its divisors is an integer number (58044042).

Almost surely, 2^395131564 is an apocalyptic number.

It is an amenable number.

395131564 is a deficient number, since it is larger than the sum of its proper divisors (301396940).

395131564 is a wasteful number, since it uses less digits than its factorization.

395131564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721184 (or 721182 counting only the distinct ones).

The product of its digits is 48600, while the sum is 37.

The square root of 395131564 is about 19877.9164904172. The cubic root of 395131564 is about 733.8048443344.

The spelling of 395131564 in words is "three hundred ninety-five million, one hundred thirty-one thousand, five hundred sixty-four".