2228162181 has 16 divisors (see below), whose sum is σ = 3396451968. Its totient is φ = 1272801600.

The previous prime is 2228162173. The next prime is 2228162203. The reversal of 2228162181 is 1812618222.

It is not a de Polignac number, because 2228162181 - 2³ = 2228162173 is a prime.

It is a super-2 number, since 2×2228162181² = 9929413409677353522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228112181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51171 + ... + 84111.

It is an arithmetic number, because the mean of its divisors is an integer number (212278248).

Almost surely, 2^2228162181 is an apocalyptic number.

2228162181 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2228162181 is a deficient number, since it is larger than the sum of its proper divisors (1168289787).

2228162181 is a wasteful number, since it uses less digits than its factorization.

2228162181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36172.

The product of its digits is 6144, while the sum is 33.

The square root of 2228162181 is about 47203.4128109398. The cubic root of 2228162181 is about 1306.1175535804.

The spelling of 2228162181 in words is "two billion, two hundred twenty-eight million, one hundred sixty-two thousand, one hundred eighty-one".