2190988854 has 24 divisors (see below), whose sum is σ = 4752565272. Its totient is φ = 729495360.

The previous prime is 2190988853. The next prime is 2190988927. The reversal of 2190988854 is 4588890912.

2190988854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2190988854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190988853) 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, 53224 + ... + 84939.

It is an arithmetic number, because the mean of its divisors is an integer number (198023553).

Almost surely, 2^2190988854 is an apocalyptic number.

2190988854 is an abundant number, since it is smaller than the sum of its proper divisors (2561576418).

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

2190988854 is a wasteful number, since it uses less digits than its factorization.

2190988854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139052 (or 139049 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The square root of 2190988854 is about 46807.9998931807. Note that the first 3 decimals coincide. The cubic root of 2190988854 is about 1298.8132866560.

The spelling of 2190988854 in words is "two billion, one hundred ninety million, nine hundred eighty-eight thousand, eight hundred fifty-four".