1155634955 has 16 divisors (see below), whose sum is σ = 1398539520. Its totient is φ = 916684128.

The previous prime is 1155634951. The next prime is 1155635021. The reversal of 1155634955 is 5594365511.

It is a cyclic number.

It is not a de Polignac number, because 1155634955 - 2² = 1155634951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155634951) 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, 408536 + ... + 411354.

It is an arithmetic number, because the mean of its divisors is an integer number (87408720).

Almost surely, 2^1155634955 is an apocalyptic number.

1155634955 is a deficient number, since it is larger than the sum of its proper divisors (242904565).

1155634955 is a wasteful number, since it uses less digits than its factorization.

1155634955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490.

The product of its digits is 405000, while the sum is 44.

The square root of 1155634955 is about 33994.6312673045. The cubic root of 1155634955 is about 1049.3979784017.

The spelling of 1155634955 in words is "one billion, one hundred fifty-five million, six hundred thirty-four thousand, nine hundred fifty-five".