1155164031318 has 32 divisors (see below), whose sum is σ = 2523713997312. Its totient is φ = 349583580000.

The previous prime is 1155164031313. The next prime is 1155164031331. The reversal of 1155164031318 is 8131304615511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155164031313) 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, 11603221 + ... + 11702352.

It is an arithmetic number, because the mean of its divisors is an integer number (78866062416).

Almost surely, 2^{1155164031318} is an apocalyptic number.

1155164031318 is an abundant number, since it is smaller than the sum of its proper divisors (1368549965994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155164031318 is a wasteful number, since it uses less digits than its factorization.

1155164031318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23306340.

The product of its (nonzero) digits is 43200, while the sum is 39.

Adding to 1155164031318 its reverse (8131304615511), we get a palindrome (9286468646829).

The spelling of 1155164031318 in words is "one trillion, one hundred fifty-five billion, one hundred sixty-four million, thirty-one thousand, three hundred eighteen".