2139869232 has 80 divisors (see below), whose sum is σ = 6153936480. Its totient is φ = 711929088.

The previous prime is 2139869227. The next prime is 2139869257. The reversal of 2139869232 is 2329689312.

It is a happy number.

2139869232 is a `hidden beast` number, since 21 + 398 + 6 + 9 + 232 = 666.

It is a nude number because it is divisible by every one of its digits.

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, 236178 + ... + 245070.

It is an arithmetic number, because the mean of its divisors is an integer number (76924206).

Almost surely, 2^2139869232 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 2139869232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3076968240).

2139869232 is an abundant number, since it is smaller than the sum of its proper divisors (4014067248).

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

2139869232 is a wasteful number, since it uses less digits than its factorization.

2139869232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9467 (or 9455 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 2139869232 is about 46258.7206048762. The cubic root of 2139869232 is about 1288.6324935142.

The spelling of 2139869232 in words is "two billion, one hundred thirty-nine million, eight hundred sixty-nine thousand, two hundred thirty-two".