2139889557 has 16 divisors (see below), whose sum is σ = 3080706048. Its totient is φ = 1313407680.

The previous prime is 2139889553. The next prime is 2139889579. The reversal of 2139889557 is 7559889312.

It is not a de Polignac number, because 2139889557 - 2² = 2139889553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2139889497 and 2139889506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139889553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56694 + ... + 86567.

It is an arithmetic number, because the mean of its divisors is an integer number (192544128).

Almost surely, 2^2139889557 is an apocalyptic number.

It is an amenable number.

2139889557 is a deficient number, since it is larger than the sum of its proper divisors (940816491).

2139889557 is a wasteful number, since it uses less digits than its factorization.

2139889557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143660.

The product of its digits is 5443200, while the sum is 57.

The square root of 2139889557 is about 46258.9402926613. The cubic root of 2139889557 is about 1288.6365734166.

The spelling of 2139889557 in words is "two billion, one hundred thirty-nine million, eight hundred eighty-nine thousand, five hundred fifty-seven".