1160812661 has 4 divisors (see below), whose sum is σ = 1168603500. Its totient is φ = 1153021824.

The previous prime is 1160812637. The next prime is 1160812663. The reversal of 1160812661 is 1662180611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 272415025 + 888397636 = 16505^2 + 29806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1160812661 - 2²² = 1156618357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1160812663) by changing a digit.

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, 3895196 + ... + 3895493.

It is an arithmetic number, because the mean of its divisors is an integer number (292150875).

Almost surely, 2^1160812661 is an apocalyptic number.

It is an amenable number.

1160812661 is a deficient number, since it is larger than the sum of its proper divisors (7790839).

1160812661 is an equidigital number, since it uses as much as digits as its factorization.

1160812661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7790838.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1160812661 is about 34070.7009173571. The cubic root of 1160812661 is about 1050.9628842320.

The spelling of 1160812661 in words is "one billion, one hundred sixty million, eight hundred twelve thousand, six hundred sixty-one".