2112169638 has 32 divisors (see below), whose sum is σ = 4248972000. Its totient is φ = 699964416.

The previous prime is 2112169601. The next prime is 2112169687. The reversal of 2112169638 is 8369612112.

It is a super-2 number, since 2×2112169638² = 8922521159378102088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112169596 and 2112169605.

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, 813270 + ... + 815862.

It is an arithmetic number, because the mean of its divisors is an integer number (132780375).

Almost surely, 2^2112169638 is an apocalyptic number.

2112169638 is an abundant number, since it is smaller than the sum of its proper divisors (2136802362).

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

2112169638 is a wasteful number, since it uses less digits than its factorization.

2112169638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336.

The product of its digits is 31104, while the sum is 39.

The square root of 2112169638 is about 45958.3467718324. The cubic root of 2112169638 is about 1283.0480820704.

The spelling of 2112169638 in words is "two billion, one hundred twelve million, one hundred sixty-nine thousand, six hundred thirty-eight".