1159218321 has 16 divisors (see below), whose sum is σ = 1637895168. Its totient is φ = 726752000.

The previous prime is 1159218283. The next prime is 1159218323. The reversal of 1159218321 is 1238129511.

It is a cyclic number.

It is not a de Polignac number, because 1159218321 - 2⁶ = 1159218257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1159218323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57616 + ... + 75086.

It is an arithmetic number, because the mean of its divisors is an integer number (102368448).

Almost surely, 2^1159218321 is an apocalyptic number.

It is an amenable number.

1159218321 is a deficient number, since it is larger than the sum of its proper divisors (478676847).

1159218321 is a wasteful number, since it uses less digits than its factorization.

1159218321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18792.

The product of its digits is 4320, while the sum is 33.

The square root of 1159218321 is about 34047.2953551380. The cubic root of 1159218321 is about 1050.4815088612.

The spelling of 1159218321 in words is "one billion, one hundred fifty-nine million, two hundred eighteen thousand, three hundred twenty-one".