1638054228 has 48 divisors (see below), whose sum is σ = 3890001024. Its totient is φ = 536346240.

The previous prime is 1638054211. The next prime is 1638054247. The reversal of 1638054228 is 8224508361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 999826 + ... + 1001462.

It is an arithmetic number, because the mean of its divisors is an integer number (81041688).

Almost surely, 2^1638054228 is an apocalyptic number.

It is an amenable number.

1638054228 is an abundant number, since it is smaller than the sum of its proper divisors (2251946796).

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

1638054228 is a wasteful number, since it uses less digits than its factorization.

1638054228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072 (or 3070 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 1638054228 is about 40472.8826252838. The cubic root of 1638054228 is about 1178.8071417680.

The spelling of 1638054228 in words is "one billion, six hundred thirty-eight million, fifty-four thousand, two hundred twenty-eight".