2189631752 has 32 divisors (see below), whose sum is σ = 5118621120. Its totient is φ = 853103040.

The previous prime is 2189631751. The next prime is 2189631761. The reversal of 2189631752 is 2571369812.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (2189631751) 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, 1776683 + ... + 1777914.

It is an arithmetic number, because the mean of its divisors is an integer number (159956910).

Almost surely, 2^2189631752 is an apocalyptic number.

2189631752 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2189631752 is an abundant number, since it is smaller than the sum of its proper divisors (2928989368).

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

2189631752 is a wasteful number, since it uses less digits than its factorization.

2189631752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554621 (or 3554617 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 2189631752 is about 46793.5011727056. The cubic root of 2189631752 is about 1298.5450689279.

The spelling of 2189631752 in words is "two billion, one hundred eighty-nine million, six hundred thirty-one thousand, seven hundred fifty-two".