1315172395 has 4 divisors (see below), whose sum is σ = 1578206880. Its totient is φ = 1052137912.

The previous prime is 1315172393. The next prime is 1315172429. The reversal of 1315172395 is 5932715131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1315172395 - 2¹ = 1315172393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1315172393) 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, 131517235 + ... + 131517244.

It is an arithmetic number, because the mean of its divisors is an integer number (394551720).

Almost surely, 2^1315172395 is an apocalyptic number.

1315172395 is a deficient number, since it is larger than the sum of its proper divisors (263034485).

1315172395 is an equidigital number, since it uses as much as digits as its factorization.

1315172395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263034484.

The product of its digits is 28350, while the sum is 37.

The square root of 1315172395 is about 36265.3056653325. The cubic root of 1315172395 is about 1095.6223799314.

The spelling of 1315172395 in words is "one billion, three hundred fifteen million, one hundred seventy-two thousand, three hundred ninety-five".