2266650181 has 4 divisors (see below), whose sum is σ = 2289092364. Its totient is φ = 2244208000.

The previous prime is 2266650173. The next prime is 2266650187. The reversal of 2266650181 is 1810566622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1810566622 = 2 ⋅905283311.

It can be written as a sum of positive squares in 2 ways, for example, as 1456109281 + 810540900 = 38159^2 + 28470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2266650181 - 2³ = 2266650173 is a prime.

It is a super-2 number, since 2×2266650181² = 10275406086054665522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2266650181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2266650187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11220940 + ... + 11221141.

It is an arithmetic number, because the mean of its divisors is an integer number (572273091).

Almost surely, 2^2266650181 is an apocalyptic number.

It is an amenable number.

2266650181 is a deficient number, since it is larger than the sum of its proper divisors (22442183).

2266650181 is a wasteful number, since it uses less digits than its factorization.

2266650181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22442182.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 2266650181 is about 47609.3497225072. The cubic root of 2266650181 is about 1313.5950395279.

The spelling of 2266650181 in words is "two billion, two hundred sixty-six million, six hundred fifty thousand, one hundred eighty-one".