2100919194 has 96 divisors (see below), whose sum is σ = 5452888896. Its totient is φ = 599166720.

The previous prime is 2100919189. The next prime is 2100919229. The reversal of 2100919194 is 4919190012.

It is a super-2 number, since 2×2100919194² = 8827722919435219272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79324 + ... + 102440.

It is an arithmetic number, because the mean of its divisors is an integer number (56800926).

Almost surely, 2^2100919194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100919194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2726444448).

2100919194 is an abundant number, since it is smaller than the sum of its proper divisors (3351969702).

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

2100919194 is a wasteful number, since it uses less digits than its factorization.

2100919194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23162 (or 23150 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 2100919194 is about 45835.7850810914. The cubic root of 2100919194 is about 1280.7659791118.

The spelling of 2100919194 in words is "two billion, one hundred million, nine hundred nineteen thousand, one hundred ninety-four".