2072185139 has 2 divisors, whose sum is σ = 2072185140. Its totient is φ = 2072185138.

The previous prime is 2072185109. The next prime is 2072185183. The reversal of 2072185139 is 9315812702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2072185139 - 2²⁸ = 1803749683 is a prime.

It is not a weakly prime, because it can be changed into another prime (2072185109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1036092569 + 1036092570.

It is an arithmetic number, because the mean of its divisors is an integer number (1036092570).

Almost surely, 2^2072185139 is an apocalyptic number.

2072185139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2072185139 is an equidigital number, since it uses as much as digits as its factorization.

2072185139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 2072185139 is about 45521.2602967009. The cubic root of 2072185139 is about 1274.9001872909.

The spelling of 2072185139 in words is "two billion, seventy-two million, one hundred eighty-five thousand, one hundred thirty-nine".