1153852665 has 32 divisors (see below), whose sum is σ = 2149721856. Its totient is φ = 517520640.

The previous prime is 1153852663. The next prime is 1153852681. The reversal of 1153852665 is 5662583511.

It is a happy number.

It is not a de Polignac number, because 1153852665 - 2¹ = 1153852663 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1153852663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98106 + ... + 109235.

It is an arithmetic number, because the mean of its divisors is an integer number (67178808).

Almost surely, 2^1153852665 is an apocalyptic number.

1153852665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1153852665 is a deficient number, since it is larger than the sum of its proper divisors (995869191).

1153852665 is a wasteful number, since it uses less digits than its factorization.

1153852665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207409.

The product of its digits is 216000, while the sum is 42.

The square root of 1153852665 is about 33968.4068657922. The cubic root of 1153852665 is about 1048.8582191833.

The spelling of 1153852665 in words is "one billion, one hundred fifty-three million, eight hundred fifty-two thousand, six hundred sixty-five".