1317915145 has 8 divisors (see below), whose sum is σ = 1664735040. Its totient is φ = 998840880.

The previous prime is 1317915143. The next prime is 1317915149. The reversal of 1317915145 is 5415197131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1317915145 - 2¹ = 1317915143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1317915143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6936301 + ... + 6936490.

It is an arithmetic number, because the mean of its divisors is an integer number (208091880).

Almost surely, 2^1317915145 is an apocalyptic number.

It is an amenable number.

1317915145 is a deficient number, since it is larger than the sum of its proper divisors (346819895).

1317915145 is a wasteful number, since it uses less digits than its factorization.

1317915145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13872815.

The product of its digits is 18900, while the sum is 37.

The square root of 1317915145 is about 36303.1010383411. The cubic root of 1317915145 is about 1096.3834795800.

The spelling of 1317915145 in words is "one billion, three hundred seventeen million, nine hundred fifteen thousand, one hundred forty-five".