2163788100 has 72 divisors (see below), whose sum is σ = 6956186720. Its totient is φ = 577009440.

The previous prime is 2163788059. The next prime is 2163788111. The reversal of 2163788100 is 18873612.

2163788100 is a `hidden beast` number, since 2 + 1 + 637 + 8 + 8 + 10 + 0 = 666.

It is a super-2 number, since 2×2163788100² = 9363957883403220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 398002 + ... + 403401.

Almost surely, 2^2163788100 is an apocalyptic number.

2163788100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2163788100 is an abundant number, since it is smaller than the sum of its proper divisors (4792398620).

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

2163788100 is a wasteful number, since it uses less digits than its factorization.

2163788100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801426 (or 801413 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2163788100 is about 46516.5357695519. The cubic root of 2163788100 is about 1293.4160406657.

The spelling of 2163788100 in words is "two billion, one hundred sixty-three million, seven hundred eighty-eight thousand, one hundred".