1166256233 has 4 divisors (see below), whose sum is σ = 1227638160. Its totient is φ = 1104874308.

The previous prime is 1166256229. The next prime is 1166256241. The reversal of 1166256233 is 3326526611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3326526611 = 11933 ⋅278767.

It is a cyclic number.

It is not a de Polignac number, because 1166256233 - 2² = 1166256229 is a prime.

It is a super-2 number, since 2×1166256233² = 2720307202022700578, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1166256193 and 1166256202.

It is not an unprimeable number, because it can be changed into a prime (1166256433) 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, 30690935 + ... + 30690972.

It is an arithmetic number, because the mean of its divisors is an integer number (306909540).

Almost surely, 2^1166256233 is an apocalyptic number.

It is an amenable number.

1166256233 is a deficient number, since it is larger than the sum of its proper divisors (61381927).

1166256233 is an equidigital number, since it uses as much as digits as its factorization.

1166256233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61381926.

The product of its digits is 38880, while the sum is 35.

The square root of 1166256233 is about 34150.4938910113. The cubic root of 1166256233 is about 1052.6031352905.

The spelling of 1166256233 in words is "one billion, one hundred sixty-six million, two hundred fifty-six thousand, two hundred thirty-three".