2139549552 has 200 divisors, whose sum is σ = 7493957856. Its totient is φ = 575299584.

The previous prime is 2139549551. The next prime is 2139549583. The reversal of 2139549552 is 2559459312.

2139549552 is a `hidden beast` number, since 2 + 1 + 3 + 95 + 4 + 9 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2139549498 and 2139549507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139549551) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 147288 + ... + 161160.

Almost surely, 2^2139549552 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 2139549552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3746978928).

2139549552 is an abundant number, since it is smaller than the sum of its proper divisors (5354408304).

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

2139549552 is a wasteful number, since it uses less digits than its factorization.

2139549552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13917 (or 13902 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The square root of 2139549552 is about 46255.2651273344. The cubic root of 2139549552 is about 1288.5683197250.

The spelling of 2139549552 in words is "two billion, one hundred thirty-nine million, five hundred forty-nine thousand, five hundred fifty-two".