4539989138 has 4 divisors (see below), whose sum is σ = 6809983710. Its totient is φ = 2269994568.

The previous prime is 4539989137. The next prime is 4539989161. The reversal of 4539989138 is 8319899354.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2745026449 + 1794962689 = 52393^2 + 42367^2 .

It is a super-3 number, since 3×4539989138³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (4539989137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1134997283 + ... + 1134997286.

Almost surely, 2^4539989138 is an apocalyptic number.

4539989138 is a deficient number, since it is larger than the sum of its proper divisors (2269994572).

4539989138 is a wasteful number, since it uses less digits than its factorization.

4539989138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269994571.

The product of its digits is 8398080, while the sum is 59.

The square root of 4539989138 is about 67379.4415085195. The cubic root of 4539989138 is about 1655.8396250771.

The spelling of 4539989138 in words is "four billion, five hundred thirty-nine million, nine hundred eighty-nine thousand, one hundred thirty-eight".