818010139 has 2 divisors, whose sum is σ = 818010140. Its totient is φ = 818010138.

The previous prime is 818010107. The next prime is 818010181. The reversal of 818010139 is 931010818.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 818010139 - 2⁵ = 818010107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 818010139.

It is not a weakly prime, because it can be changed into another prime (818013139) 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 as a sum of consecutive naturals, namely, 409005069 + 409005070.

It is an arithmetic number, because the mean of its divisors is an integer number (409005070).

Almost surely, 2^818010139 is an apocalyptic number.

818010139 is a deficient number, since it is larger than the sum of its proper divisors (1).

818010139 is an equidigital number, since it uses as much as digits as its factorization.

818010139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 818010139 is about 28600.8765425118. The cubic root of 818010139 is about 935.2324391848.

The spelling of 818010139 in words is "eight hundred eighteen million, ten thousand, one hundred thirty-nine".