2220166491 has 8 divisors (see below), whose sum is σ = 2960443200. Its totient is φ = 1480000392.

The previous prime is 2220166477. The next prime is 2220166567. The reversal of 2220166491 is 1946610222.

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

It is not a de Polignac number, because 2220166491 - 2¹⁸ = 2219904347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2220166691) 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, 51796 + ... + 84398.

It is an arithmetic number, because the mean of its divisors is an integer number (370055400).

Almost surely, 2^2220166491 is an apocalyptic number.

2220166491 is a deficient number, since it is larger than the sum of its proper divisors (740276709).

2220166491 is a wasteful number, since it uses less digits than its factorization.

2220166491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55305.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 2220166491 is about 47118.6427117760. The cubic root of 2220166491 is about 1304.5533604611.

The spelling of 2220166491 in words is "two billion, two hundred twenty million, one hundred sixty-six thousand, four hundred ninety-one".