1320718172 has 12 divisors (see below), whose sum is σ = 2385813696. Its totient is φ = 639057120.

The previous prime is 1320718171. The next prime is 1320718181. The reversal of 1320718172 is 2718170231.

It is a super-3 number, since 3×1320718172³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320718171) 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 3 ways as a sum of consecutive naturals, for example, 5325353 + ... + 5325600.

It is an arithmetic number, because the mean of its divisors is an integer number (198817808).

Almost surely, 2^1320718172 is an apocalyptic number.

It is an amenable number.

1320718172 is a deficient number, since it is larger than the sum of its proper divisors (1065095524).

1320718172 is a wasteful number, since it uses less digits than its factorization.

1320718172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650988 (or 10650986 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 1320718172 is about 36341.6864220691. The cubic root of 1320718172 is about 1097.1602155541.

The spelling of 1320718172 in words is "one billion, three hundred twenty million, seven hundred eighteen thousand, one hundred seventy-two".