1318725273 has 16 divisors (see below), whose sum is σ = 1776867840. Its totient is φ = 869889024.

The previous prime is 1318725269. The next prime is 1318725283. The reversal of 1318725273 is 3725278131.

It is not a de Polignac number, because 1318725273 - 2² = 1318725269 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1318725223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279865 + ... + 284537.

It is an arithmetic number, because the mean of its divisors is an integer number (111054240).

Almost surely, 2^1318725273 is an apocalyptic number.

It is an amenable number.

1318725273 is a deficient number, since it is larger than the sum of its proper divisors (458142567).

1318725273 is a wasteful number, since it uses less digits than its factorization.

1318725273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5648.

The product of its digits is 70560, while the sum is 39.

The square root of 1318725273 is about 36314.2571588626. The cubic root of 1318725273 is about 1096.6080840814.

The spelling of 1318725273 in words is "one billion, three hundred eighteen million, seven hundred twenty-five thousand, two hundred seventy-three".