2190841688 has 32 divisors (see below), whose sum is σ = 4698259200. Its totient is φ = 938212512.

The previous prime is 2190841687. The next prime is 2190841733. The reversal of 2190841688 is 8861480912.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190841687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62243 + ... + 90861.

It is an arithmetic number, because the mean of its divisors is an integer number (146820600).

Almost surely, 2^2190841688 is an apocalyptic number.

2190841688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2190841688 is an abundant number, since it is smaller than the sum of its proper divisors (2507417512).

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

2190841688 is a wasteful number, since it uses less digits than its factorization.

2190841688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29999 (or 29995 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 47.

The square root of 2190841688 is about 46806.4278491747. The cubic root of 2190841688 is about 1298.7842061131.

The spelling of 2190841688 in words is "two billion, one hundred ninety million, eight hundred forty-one thousand, six hundred eighty-eight".