1161507264 has 28 divisors (see below), whose sum is σ = 3073155144. Its totient is φ = 387169024.

The previous prime is 1161507253. The next prime is 1161507289. The reversal of 1161507264 is 4627051611.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3024567 + ... + 3024950.

Almost surely, 2^1161507264 is an apocalyptic number.

It is an amenable number.

1161507264 is an abundant number, since it is smaller than the sum of its proper divisors (1911647880).

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

1161507264 is an equidigital number, since it uses as much as digits as its factorization.

1161507264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049532 (or 6049522 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1161507264 is about 34080.8929460482. The cubic root of 1161507264 is about 1051.1724662601.

Adding to 1161507264 its reverse (4627051611), we get a palindrome (5788558875).

The spelling of 1161507264 in words is "one billion, one hundred sixty-one million, five hundred seven thousand, two hundred sixty-four".