2139837984 has 36 divisors (see below), whose sum is σ = 6085165086. Its totient is φ = 713279232.

The previous prime is 2139837979. The next prime is 2139838031. The reversal of 2139837984 is 4897389312.

2139837984 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1689210000 + 450627984 = 41100^2 + 21228^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2139837984.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3714709 + ... + 3715284.

Almost surely, 2^2139837984 is an apocalyptic number.

2139837984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2139837984 is an abundant number, since it is smaller than the sum of its proper divisors (3945327102).

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

2139837984 is a wasteful number, since it uses less digits than its factorization.

2139837984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7430009 (or 7429998 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 2139837984 is about 46258.3828511114. The cubic root of 2139837984 is about 1288.6262209527.

The spelling of 2139837984 in words is "two billion, one hundred thirty-nine million, eight hundred thirty-seven thousand, nine hundred eighty-four".