1153213655 has 8 divisors (see below), whose sum is σ = 1509661584. Its totient is φ = 838700800.

The previous prime is 1153213651. The next prime is 1153213771. The reversal of 1153213655 is 5563123511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1153213655 - 2² = 1153213651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153213651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10483706 + ... + 10483815.

It is an arithmetic number, because the mean of its divisors is an integer number (188707698).

Almost surely, 2^1153213655 is an apocalyptic number.

1153213655 is a deficient number, since it is larger than the sum of its proper divisors (356447929).

1153213655 is a wasteful number, since it uses less digits than its factorization.

1153213655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20967537.

The product of its digits is 13500, while the sum is 32.

The square root of 1153213655 is about 33958.9996171854. Note that the first 3 decimals coincide. The cubic root of 1153213655 is about 1048.6645622648.

The spelling of 1153213655 in words is "one billion, one hundred fifty-three million, two hundred thirteen thousand, six hundred fifty-five".