4081992228 has 18 divisors (see below), whose sum is σ = 10318369334. Its totient is φ = 1360664064.

The previous prime is 4081992227. The next prime is 4081992241. The reversal of 4081992228 is 8222991804.

It is a happy number.

4081992228 is a `hidden beast` number, since 408 + 19 + 9 + 2 + 228 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3851195364 + 230796864 = 62058^2 + 15192^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4081992227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56694301 + ... + 56694372.

Almost surely, 2^4081992228 is an apocalyptic number.

It is an amenable number.

4081992228 is an abundant number, since it is smaller than the sum of its proper divisors (6236377106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4081992228 is a wasteful number, since it uses less digits than its factorization.

4081992228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113388683 (or 113388678 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 4081992228 is about 63890.4705570400. The cubic root of 4081992228 is about 1598.1739881975.

The spelling of 4081992228 in words is "four billion, eighty-one million, nine hundred ninety-two thousand, two hundred twenty-eight".