1826842139 has 2 divisors, whose sum is σ = 1826842140. Its totient is φ = 1826842138.

The previous prime is 1826842123. The next prime is 1826842163. The reversal of 1826842139 is 9312486281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1826842139 - 2⁴ = 1826842123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1826842139.

It is not a weakly prime, because it can be changed into another prime (1826842169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913421069 + 913421070.

It is an arithmetic number, because the mean of its divisors is an integer number (913421070).

Almost surely, 2^1826842139 is an apocalyptic number.

1826842139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1826842139 is an equidigital number, since it uses as much as digits as its factorization.

1826842139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 44.

The square root of 1826842139 is about 42741.5738947456. The cubic root of 1826842139 is about 1222.4572303933.

The spelling of 1826842139 in words is "one billion, eight hundred twenty-six million, eight hundred forty-two thousand, one hundred thirty-nine".