7317382157 has 4 divisors (see below), whose sum is σ = 7337320896. Its totient is φ = 7297443420.

The previous prime is 7317382151. The next prime is 7317382159. The reversal of 7317382157 is 7512837137.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7512837137 = 13 ⋅577910549.

It is a cyclic number.

It is not a de Polignac number, because 7317382157 - 2¹⁶ = 7317316621 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 (7317382151) 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, 9968819 + ... + 9969552.

It is an arithmetic number, because the mean of its divisors is an integer number (1834330224).

Almost surely, 2^7317382157 is an apocalyptic number.

It is an amenable number.

7317382157 is a deficient number, since it is larger than the sum of its proper divisors (19938739).

7317382157 is a wasteful number, since it uses less digits than its factorization.

7317382157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19938738.

The product of its digits is 246960, while the sum is 44.

The square root of 7317382157 is about 85541.6983523241. The cubic root of 7317382157 is about 1941.4158860854.

The spelling of 7317382157 in words is "seven billion, three hundred seventeen million, three hundred eighty-two thousand, one hundred fifty-seven".