1153631655 has 48 divisors (see below), whose sum is σ = 2222621856. Its totient is φ = 548770560.

The previous prime is 1153631651. The next prime is 1153631681. The reversal of 1153631655 is 5561363511.

1153631655 is a `hidden beast` number, since 1 + 15 + 3 + 631 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 1153631655 - 2² = 1153631651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153631651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4249 + ... + 48221.

It is an arithmetic number, because the mean of its divisors is an integer number (46304622).

Almost surely, 2^1153631655 is an apocalyptic number.

1153631655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1153631655 is a deficient number, since it is larger than the sum of its proper divisors (1068990201).

1153631655 is a wasteful number, since it uses less digits than its factorization.

1153631655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44048 (or 44045 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 1153631655 is about 33965.1535400622. The cubic root of 1153631655 is about 1048.7912484848.

The spelling of 1153631655 in words is "one billion, one hundred fifty-three million, six hundred thirty-one thousand, six hundred fifty-five".