2180000139 has 4 divisors (see below), whose sum is σ = 2906666856. Its totient is φ = 1453333424.

The previous prime is 2180000129. The next prime is 2180000143. The reversal of 2180000139 is 9310000812.

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

It is a cyclic number.

It is not a de Polignac number, because 2180000139 - 2¹¹ = 2179998091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2180000129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363333354 + ... + 363333359.

It is an arithmetic number, because the mean of its divisors is an integer number (726666714).

Almost surely, 2^2180000139 is an apocalyptic number.

2180000139 is a deficient number, since it is larger than the sum of its proper divisors (726666717).

2180000139 is an equidigital number, since it uses as much as digits as its factorization.

2180000139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726666716.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 2180000139 is about 46690.4716082414. The cubic root of 2180000139 is about 1296.6382845327.

The spelling of 2180000139 in words is "two billion, one hundred eighty million, one hundred thirty-nine", and thus it is an aban number.