1118396238557 has 8 divisors (see below), whose sum is σ = 1204436160984. Its totient is φ = 1032357665088.

The previous prime is 1118396238523. The next prime is 1118396238649. The reversal of 1118396238557 is 7558326938111.

It can be written as a sum of positive squares in 4 ways, for example, as 87817988281 + 1030578250276 = 296341^2 + 1015174^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1118396238557 - 2²⁴ = 1118379461341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1118396238496 and 1118396238505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118396238857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1968743 + ... + 2472395.

It is an arithmetic number, because the mean of its divisors is an integer number (150554520123).

Almost surely, 2^{1118396238557} is an apocalyptic number.

It is an amenable number.

1118396238557 is a deficient number, since it is larger than the sum of its proper divisors (86039922427).

1118396238557 is a wasteful number, since it uses less digits than its factorization.

1118396238557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674479.

The product of its digits is 10886400, while the sum is 59.

The spelling of 1118396238557 in words is "one trillion, one hundred eighteen billion, three hundred ninety-six million, two hundred thirty-eight thousand, five hundred fifty-seven".