1395932161 has 4 divisors (see below), whose sum is σ = 1503311572. Its totient is φ = 1288552752.

The previous prime is 1395932129. The next prime is 1395932171. The reversal of 1395932161 is 1612395931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1612395931 = 83 ⋅19426457.

It can be written as a sum of positive squares in 2 ways, for example, as 904866561 + 491065600 = 30081^2 + 22160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1395932161 - 2⁵ = 1395932129 is a prime.

It is a super-2 number, since 2×1395932161² = 3897253196228259842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1395932171) 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, 53689686 + ... + 53689711.

It is an arithmetic number, because the mean of its divisors is an integer number (375827893).

Almost surely, 2^1395932161 is an apocalyptic number.

It is an amenable number.

1395932161 is a deficient number, since it is larger than the sum of its proper divisors (107379411).

1395932161 is a wasteful number, since it uses less digits than its factorization.

1395932161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107379410.

The product of its digits is 43740, while the sum is 40.

The square root of 1395932161 is about 37362.1755389057. The cubic root of 1395932161 is about 1117.6044037272.

The spelling of 1395932161 in words is "one billion, three hundred ninety-five million, nine hundred thirty-two thousand, one hundred sixty-one".