8201890139 has 2 divisors, whose sum is σ = 8201890140. Its totient is φ = 8201890138.

The previous prime is 8201890111. The next prime is 8201890199. The reversal of 8201890139 is 9310981028.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8201890139 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 8201890096 and 8201890105.

It is not a weakly prime, because it can be changed into another prime (8201890199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4100945069 + 4100945070.

It is an arithmetic number, because the mean of its divisors is an integer number (4100945070).

Almost surely, 2^8201890139 is an apocalyptic number.

8201890139 is a deficient number, since it is larger than the sum of its proper divisors (1).

8201890139 is an equidigital number, since it uses as much as digits as its factorization.

8201890139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 8201890139 is about 90564.2873267382. The cubic root of 8201890139 is about 2016.6846032085.

The spelling of 8201890139 in words is "eight billion, two hundred one million, eight hundred ninety thousand, one hundred thirty-nine".