1317754157 has 4 divisors (see below), whose sum is σ = 1375047840. Its totient is φ = 1260460476.

The previous prime is 1317754153. The next prime is 1317754189. The reversal of 1317754157 is 7514577131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1317754157 - 2² = 1317754153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317754153) 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, 28646807 + ... + 28646852.

It is an arithmetic number, because the mean of its divisors is an integer number (343761960).

Almost surely, 2^1317754157 is an apocalyptic number.

It is an amenable number.

1317754157 is a deficient number, since it is larger than the sum of its proper divisors (57293683).

1317754157 is an equidigital number, since it uses as much as digits as its factorization.

1317754157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57293682.

The product of its digits is 102900, while the sum is 41.

The square root of 1317754157 is about 36300.8836944777. The cubic root of 1317754157 is about 1096.3388353878.

The spelling of 1317754157 in words is "one billion, three hundred seventeen million, seven hundred fifty-four thousand, one hundred fifty-seven".