2219731836 has 24 divisors (see below), whose sum is σ = 5919285120. Its totient is φ = 634209072.

The previous prime is 2219731819. The next prime is 2219731883. The reversal of 2219731836 is 6381379122.

2219731836 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13212606 + ... + 13212773.

It is an arithmetic number, because the mean of its divisors is an integer number (246636880).

Almost surely, 2^2219731836 is an apocalyptic number.

It is an amenable number.

2219731836 is an abundant number, since it is smaller than the sum of its proper divisors (3699553284).

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

2219731836 is a wasteful number, since it uses less digits than its factorization.

2219731836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26425393 (or 26425391 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 2219731836 is about 47114.0301396516. The cubic root of 2219731836 is about 1304.4682215536.

The spelling of 2219731836 in words is "two billion, two hundred nineteen million, seven hundred thirty-one thousand, eight hundred thirty-six".