18285830077 has 2 divisors, whose sum is σ = 18285830078. Its totient is φ = 18285830076.

The previous prime is 18285830063. The next prime is 18285830111. The reversal of 18285830077 is 77003858281.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9847386756 + 8438443321 = 99234^2 + 91861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18285830077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18285830077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18285830777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9142915038 + 9142915039.

It is an arithmetic number, because the mean of its divisors is an integer number (9142915039).

Almost surely, 2^18285830077 is an apocalyptic number.

It is an amenable number.

18285830077 is a deficient number, since it is larger than the sum of its proper divisors (1).

18285830077 is an equidigital number, since it uses as much as digits as its factorization.

18285830077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 18285830077 in words is "eighteen billion, two hundred eighty-five million, eight hundred thirty thousand, seventy-seven".