2139055936 has 112 divisors (see below), whose sum is σ = 4613696640. Its totient is φ = 983178240.

The previous prime is 2139055927. The next prime is 2139055969. The reversal of 2139055936 is 6395509312.

It is a junction number, because it is equal to n+sod(n) for n = 2139055892 and 2139055901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31926175 + ... + 31926241.

It is an arithmetic number, because the mean of its divisors is an integer number (41193720).

Almost surely, 2^2139055936 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 2139055936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2306848320).

2139055936 is an abundant number, since it is smaller than the sum of its proper divisors (2474640704).

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

2139055936 is an frugal number, since it uses more digits than its factorization.

2139055936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 43.

The square root of 2139055936 is about 46249.9290377834. The cubic root of 2139055936 is about 1288.4692167992.

It can be divided in two parts, 2 and 139055936, that multiplied together give a palindrome (278111872).

The spelling of 2139055936 in words is "two billion, one hundred thirty-nine million, fifty-five thousand, nine hundred thirty-six".