1166220523 has 8 divisors (see below), whose sum is σ = 1286562816. Its totient is φ = 1050254400.

The previous prime is 1166220481. The next prime is 1166220563. The reversal of 1166220523 is 3250226611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1166220523 - 2²¹ = 1164123371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1166220491 and 1166220500.

It is not an unprimeable number, because it can be changed into a prime (1166220563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093483 + ... + 1094548.

It is an arithmetic number, because the mean of its divisors is an integer number (160820352).

Almost surely, 2^1166220523 is an apocalyptic number.

1166220523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1166220523 is a deficient number, since it is larger than the sum of its proper divisors (120342293).

1166220523 is a wasteful number, since it uses less digits than its factorization.

1166220523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188085.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1166220523 is about 34149.9710541605. The cubic root of 1166220523 is about 1052.5923918419.

The spelling of 1166220523 in words is "one billion, one hundred sixty-six million, two hundred twenty thousand, five hundred twenty-three".