18852155149 has 2 divisors, whose sum is σ = 18852155150. Its totient is φ = 18852155148.

The previous prime is 18852155123. The next prime is 18852155191. The reversal of 18852155149 is 94155125881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17013289225 + 1838865924 = 130435^2 + 42882^2 .

It is a cyclic number.

It is not a de Polignac number, because 18852155149 - 2¹⁵ = 18852122381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18852135149) 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, 9426077574 + 9426077575.

It is an arithmetic number, because the mean of its divisors is an integer number (9426077575).

Almost surely, 2^18852155149 is an apocalyptic number.

It is an amenable number.

18852155149 is a deficient number, since it is larger than the sum of its proper divisors (1).

18852155149 is an equidigital number, since it uses as much as digits as its factorization.

18852155149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576000, while the sum is 49.

The spelling of 18852155149 in words is "eighteen billion, eight hundred fifty-two million, one hundred fifty-five thousand, one hundred forty-nine".