1395615132 has 72 divisors (see below), whose sum is σ = 3719111760. Its totient is φ = 440052480.

The previous prime is 1395615127. The next prime is 1395615139. The reversal of 1395615132 is 2315165931.

It is a happy number.

1395615132 is a `hidden beast` number, since 1 + 3 + 9 + 5 + 615 + 1 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395615139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 650782 + ... + 652922.

It is an arithmetic number, because the mean of its divisors is an integer number (51654330).

Almost surely, 2^1395615132 is an apocalyptic number.

1395615132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1395615132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1859555880).

1395615132 is an abundant number, since it is smaller than the sum of its proper divisors (2323496628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1395615132 is a wasteful number, since it uses less digits than its factorization.

1395615132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123 (or 3118 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 1395615132 is about 37357.9326515802. The cubic root of 1395615132 is about 1117.5197912505.

The spelling of 1395615132 in words is "one billion, three hundred ninety-five million, six hundred fifteen thousand, one hundred thirty-two".