1155116312 has 64 divisors (see below), whose sum is σ = 2517419520. Its totient is φ = 486678528.

The previous prime is 1155116311. The next prime is 1155116351. The reversal of 1155116312 is 2136115511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155116311) 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, 1194053 + ... + 1195019.

It is an arithmetic number, because the mean of its divisors is an integer number (39334680).

Almost surely, 2^1155116312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155116312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1258709760).

1155116312 is an abundant number, since it is smaller than the sum of its proper divisors (1362303208).

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

1155116312 is a wasteful number, since it uses less digits than its factorization.

1155116312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1316 counting only the distinct ones).

The product of its digits is 900, while the sum is 26.

The square root of 1155116312 is about 33987.0021037455. The cubic root of 1155116312 is about 1049.2409667795.

The spelling of 1155116312 in words is "one billion, one hundred fifty-five million, one hundred sixteen thousand, three hundred twelve".