18350541877 has 2 divisors, whose sum is σ = 18350541878. Its totient is φ = 18350541876.

The previous prime is 18350541827. The next prime is 18350541883. The reversal of 18350541877 is 77814505381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10429719876 + 7920822001 = 102126^2 + 88999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18350541877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18350541877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18350541827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9175270938 + 9175270939.

It is an arithmetic number, because the mean of its divisors is an integer number (9175270939).

Almost surely, 2^18350541877 is an apocalyptic number.

It is an amenable number.

18350541877 is a deficient number, since it is larger than the sum of its proper divisors (1).

18350541877 is an equidigital number, since it uses as much as digits as its factorization.

18350541877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 18350541877 in words is "eighteen billion, three hundred fifty million, five hundred forty-one thousand, eight hundred seventy-seven".