1318538170369 has 32 divisors (see below), whose sum is σ = 1565203161600. Its totient is φ = 1086769474560.

The previous prime is 1318538170361. The next prime is 1318538170463. The reversal of 1318538170369 is 9630718358131.

It is not a de Polignac number, because 1318538170369 - 2³ = 1318538170361 is a prime.

It is a super-2 number, since 2×1318538170369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318538170361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173693764 + ... + 173701354.

It is an arithmetic number, because the mean of its divisors is an integer number (48912598800).

Almost surely, 2^{1318538170369} is an apocalyptic number.

It is an amenable number.

1318538170369 is a deficient number, since it is larger than the sum of its proper divisors (246664991231).

1318538170369 is a wasteful number, since it uses less digits than its factorization.

1318538170369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10993.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 1318538170369 in words is "one trillion, three hundred eighteen billion, five hundred thirty-eight million, one hundred seventy thousand, three hundred sixty-nine".