2187913100 has 36 divisors (see below), whose sum is σ = 4858194264. Its totient is φ = 854810880.

The previous prime is 2187913069. The next prime is 2187913103. The reversal of 2187913100 is 13197812.

It is a super-2 number, since 2×2187913100² = 9573927466303220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2187913103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250109 + ... + 258708.

Almost surely, 2^2187913100 is an apocalyptic number.

2187913100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2187913100 is an abundant number, since it is smaller than the sum of its proper divisors (2670281164).

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

2187913100 is a wasteful number, since it uses less digits than its factorization.

2187913100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508874 (or 508867 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 2187913100 is about 46775.1333509590. The cubic root of 2187913100 is about 1298.2052353409.

The spelling of 2187913100 in words is "two billion, one hundred eighty-seven million, nine hundred thirteen thousand, one hundred".