1153842165 has 160 divisors (see below), whose sum is σ = 2572247040. Its totient is φ = 482889600.

The previous prime is 1153842121. The next prime is 1153842167. The reversal of 1153842165 is 5612483511.

1153842165 is a `hidden beast` number, since 115 + 384 + 2 + 165 = 666.

It is not a de Polignac number, because 1153842165 - 2⁶ = 1153842101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153842167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1669470 + ... + 1670160.

It is an arithmetic number, because the mean of its divisors is an integer number (16076544).

Almost surely, 2^1153842165 is an apocalyptic number.

1153842165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1153842165 is an abundant number, since it is smaller than the sum of its proper divisors (1418404875).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1153842165 is a wasteful number, since it uses less digits than its factorization.

1153842165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 756 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 1153842165 is about 33968.2523100615. The cubic root of 1153842165 is about 1048.8550376550.

The spelling of 1153842165 in words is "one billion, one hundred fifty-three million, eight hundred forty-two thousand, one hundred sixty-five".