1395225931 has 32 divisors (see below), whose sum is σ = 1650585600. Its totient is φ = 1166014080.

The previous prime is 1395225929. The next prime is 1395226003.

1395225931 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1395225931 - 2¹ = 1395225929 is a prime.

It is a super-2 number, since 2×1395225931² = 3893310797069633522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1395225031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2912550 + ... + 2913028.

It is an arithmetic number, because the mean of its divisors is an integer number (51580800).

Almost surely, 2^1395225931 is an apocalyptic number.

1395225931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1395225931 is a deficient number, since it is larger than the sum of its proper divisors (255359669).

1395225931 is a wasteful number, since it uses less digits than its factorization.

1395225931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its digits is 72900, while the sum is 40.

The square root of 1395225931 is about 37352.7232072844. The cubic root of 1395225931 is about 1117.4158991273.

The spelling of 1395225931 in words is "one billion, three hundred ninety-five million, two hundred twenty-five thousand, nine hundred thirty-one".