1161153659 has 4 divisors (see below), whose sum is σ = 1185859104. Its totient is φ = 1136448216.

The previous prime is 1161153629. The next prime is 1161153731. The reversal of 1161153659 is 9563511611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1161153659 - 2²⁰ = 1160105083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161153619) 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 3 ways as a sum of consecutive naturals, for example, 12352652 + ... + 12352745.

It is an arithmetic number, because the mean of its divisors is an integer number (296464776).

Almost surely, 2^1161153659 is an apocalyptic number.

1161153659 is a deficient number, since it is larger than the sum of its proper divisors (24705445).

1161153659 is an equidigital number, since it uses as much as digits as its factorization.

1161153659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24705444.

The product of its digits is 24300, while the sum is 38.

The square root of 1161153659 is about 34075.7048202968. The cubic root of 1161153659 is about 1051.0657837400.

The spelling of 1161153659 in words is "one billion, one hundred sixty-one million, one hundred fifty-three thousand, six hundred fifty-nine".