18603361850 has 12 divisors (see below), whose sum is σ = 34602253134. Its totient is φ = 7441344720.

The previous prime is 18603361807. The next prime is 18603361859. The reversal of 18603361850 is 5816330681.

It can be written as a sum of positive squares in 3 ways, for example, as 6997824409 + 11605537441 = 83653^2 + 107729^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18603361798 and 18603361807.

It is not an unprimeable number, because it can be changed into a prime (18603361859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186033569 + ... + 186033668.

Almost surely, 2^18603361850 is an apocalyptic number.

18603361850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18603361850 is a deficient number, since it is larger than the sum of its proper divisors (15998891284).

18603361850 is a wasteful number, since it uses less digits than its factorization.

18603361850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372067249 (or 372067244 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 18603361850 in words is "eighteen billion, six hundred three million, three hundred sixty-one thousand, eight hundred fifty".