1155405112 has 32 divisors (see below), whose sum is σ = 2189566080. Its totient is φ = 571540480.

The previous prime is 1155405103. The next prime is 1155405137. The reversal of 1155405112 is 2115045511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779412 + ... + 780892.

It is an arithmetic number, because the mean of its divisors is an integer number (68423940).

Almost surely, 2^1155405112 is an apocalyptic number.

It is an amenable number.

1155405112 is a deficient number, since it is larger than the sum of its proper divisors (1034160968).

1155405112 is a wasteful number, since it uses less digits than its factorization.

1155405112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463 (or 2459 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 1155405112 is about 33991.2505212739. The cubic root of 1155405112 is about 1049.3284025751.

The spelling of 1155405112 in words is "one billion, one hundred fifty-five million, four hundred five thousand, one hundred twelve".