2139840552 has 16 divisors (see below), whose sum is σ = 5349601440. Its totient is φ = 713280176.

The previous prime is 2139840551. The next prime is 2139840557. The reversal of 2139840552 is 2550489312.

It is a self number, because there is not a number n which added to its sum of digits gives 2139840552.

It is not an unprimeable number, because it can be changed into a prime (2139840551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44579988 + ... + 44580035.

It is an arithmetic number, because the mean of its divisors is an integer number (334350090).

Almost surely, 2^2139840552 is an apocalyptic number.

It is an amenable number.

2139840552 is an abundant number, since it is smaller than the sum of its proper divisors (3209760888).

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

2139840552 is a wasteful number, since it uses less digits than its factorization.

2139840552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89160032 (or 89160028 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 2139840552 is about 46258.4106082343. The cubic root of 2139840552 is about 1288.6267364420.

The spelling of 2139840552 in words is "two billion, one hundred thirty-nine million, eight hundred forty thousand, five hundred fifty-two".