4021982132 has 18 divisors (see below), whose sum is σ = 8187606882. Its totient is φ = 1723706544.

The previous prime is 4021982119. The next prime is 4021982137. The reversal of 4021982132 is 2312891204.

It can be written as a sum of positive squares in only one way, i.e., 2227273636 + 1794708496 = 47194^2 + 42364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021982137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10259963 + ... + 10260354.

It is an arithmetic number, because the mean of its divisors is an integer number (454867049).

Almost surely, 2^4021982132 is an apocalyptic number.

It is an amenable number.

4021982132 is an abundant number, since it is smaller than the sum of its proper divisors (4165624750).

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

4021982132 is a wasteful number, since it uses less digits than its factorization.

4021982132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20520335 (or 20520326 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 4021982132 is about 63419.0991105992. The cubic root of 4021982132 is about 1590.3036130255.

The spelling of 4021982132 in words is "four billion, twenty-one million, nine hundred eighty-two thousand, one hundred thirty-two".