1153642065 has 32 divisors (see below), whose sum is σ = 1889986176. Its totient is φ = 600706560.

The previous prime is 1153642031. The next prime is 1153642079. The reversal of 1153642065 is 5602463511.

It is not a de Polignac number, because 1153642065 - 2⁶ = 1153642001 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 120754 + ... + 129956.

It is an arithmetic number, because the mean of its divisors is an integer number (59062068).

Almost surely, 2^1153642065 is an apocalyptic number.

1153642065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1153642065 is a deficient number, since it is larger than the sum of its proper divisors (736344111).

1153642065 is a wasteful number, since it uses less digits than its factorization.

1153642065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9409.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1153642065 is about 33965.3067850123. The cubic root of 1153642065 is about 1048.7944031266.

The spelling of 1153642065 in words is "one billion, one hundred fifty-three million, six hundred forty-two thousand, sixty-five".