1153005665 has 16 divisors (see below), whose sum is σ = 1585761408. Its totient is φ = 788384256.

The previous prime is 1153005631. The next prime is 1153005677. The reversal of 1153005665 is 5665003511.

It is a cyclic number.

It is not a de Polignac number, because 1153005665 - 2¹⁰ = 1153004641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34307 + ... + 59016.

It is an arithmetic number, because the mean of its divisors is an integer number (99110088).

Almost surely, 2^1153005665 is an apocalyptic number.

It is an amenable number.

1153005665 is a deficient number, since it is larger than the sum of its proper divisors (432755743).

1153005665 is an equidigital number, since it uses as much as digits as its factorization.

1153005665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93688.

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

The square root of 1153005665 is about 33955.9371097309. The cubic root of 1153005665 is about 1048.6015138564.

The spelling of 1153005665 in words is "one billion, one hundred fifty-three million, five thousand, six hundred sixty-five".