2139233868 has 48 divisors (see below), whose sum is σ = 5555128320. Its totient is φ = 711925200.

The previous prime is 2139233867. The next prime is 2139233893. The reversal of 2139233868 is 8683329312.

It is not an unprimeable number, because it can be changed into a prime (2139233867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52453 + ... + 83843.

It is an arithmetic number, because the mean of its divisors is an integer number (115731840).

Almost surely, 2^2139233868 is an apocalyptic number.

It is an amenable number.

2139233868 is an abundant number, since it is smaller than the sum of its proper divisors (3415894452).

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

2139233868 is a wasteful number, since it uses less digits than its factorization.

2139233868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32035 (or 32027 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 2139233868 is about 46251.8525899234. The cubic root of 2139233868 is about 1288.5049418348.

The spelling of 2139233868 in words is "two billion, one hundred thirty-nine million, two hundred thirty-three thousand, eight hundred sixty-eight".