18850103197 has 4 divisors (see below), whose sum is σ = 18853023580. Its totient is φ = 18847182816.

The previous prime is 18850103161. The next prime is 18850103203. The reversal of 18850103197 is 79130105881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79130105881 = 1993 ⋅39704017.

It can be written as a sum of positive squares in 2 ways, for example, as 11479193881 + 7370909316 = 107141^2 + 85854^2 .

It is a cyclic number.

It is not a de Polignac number, because 18850103197 - 2¹⁵ = 18850070429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18800103197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1450488 + ... + 1463425.

It is an arithmetic number, because the mean of its divisors is an integer number (4713255895).

Almost surely, 2^18850103197 is an apocalyptic number.

It is an amenable number.

18850103197 is a deficient number, since it is larger than the sum of its proper divisors (2920383).

18850103197 is an equidigital number, since it uses as much as digits as its factorization.

18850103197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920382.

The product of its (nonzero) digits is 60480, while the sum is 43.

The spelling of 18850103197 in words is "eighteen billion, eight hundred fifty million, one hundred three thousand, one hundred ninety-seven".