1155312988 has 12 divisors (see below), whose sum is σ = 2022039880. Its totient is φ = 577587312.

The previous prime is 1155312967. The next prime is 1155312997. The reversal of 1155312988 is 8892135511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46078 + ... + 66586.

Almost surely, 2^1155312988 is an apocalyptic number.

It is an amenable number.

1155312988 is a deficient number, since it is larger than the sum of its proper divisors (866726892).

1155312988 is a wasteful number, since it uses less digits than its factorization.

1155312988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34596 (or 34594 counting only the distinct ones).

The product of its digits is 86400, while the sum is 43.

The square root of 1155312988 is about 33989.8953808334. The cubic root of 1155312988 is about 1049.3005131079.

The spelling of 1155312988 in words is "one billion, one hundred fifty-five million, three hundred twelve thousand, nine hundred eighty-eight".