18849363850 has 24 divisors (see below), whose sum is σ = 35237803788. Its totient is φ = 7501468800.

The previous prime is 18849363823. The next prime is 18849363859. The reversal of 18849363850 is 5836394881.

It can be written as a sum of positive squares in 6 ways, for example, as 12150432441 + 6698931409 = 110229^2 + 81847^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18849363791 and 18849363800.

It is not an unprimeable number, because it can be changed into a prime (18849363859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 946971 + ... + 966670.

Almost surely, 2^18849363850 is an apocalyptic number.

18849363850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18849363850 is a deficient number, since it is larger than the sum of its proper divisors (16388439938).

18849363850 is a wasteful number, since it uses less digits than its factorization.

18849363850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913850 (or 1913845 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 18849363850 in words is "eighteen billion, eight hundred forty-nine million, three hundred sixty-three thousand, eight hundred fifty".