2239781652 has 96 divisors (see below), whose sum is σ = 5950730240. Its totient is φ = 728300160.

The previous prime is 2239781629. The next prime is 2239781681. The reversal of 2239781652 is 2561879322.

It is a junction number, because it is equal to n+sod(n) for n = 2239781598 and 2239781607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 835338 + ... + 838014.

Almost surely, 2^2239781652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2239781652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2975365120).

2239781652 is an abundant number, since it is smaller than the sum of its proper divisors (3710948588).

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

2239781652 is a wasteful number, since it uses less digits than its factorization.

2239781652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878 (or 2870 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 2239781652 is about 47326.3314868161. The cubic root of 2239781652 is about 1308.3840089567.

The spelling of 2239781652 in words is "two billion, two hundred thirty-nine million, seven hundred eighty-one thousand, six hundred fifty-two".