18493663150 has 12 divisors (see below), whose sum is σ = 34398213552. Its totient is φ = 7397465240.

The previous prime is 18493663057. The next prime is 18493663157. The reversal of 18493663150 is 5136639481.

It is a self number, because there is not a number n which added to its sum of digits gives 18493663150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18493663157) 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, 184936582 + ... + 184936681.

It is an arithmetic number, because the mean of its divisors is an integer number (2866517796).

Almost surely, 2^18493663150 is an apocalyptic number.

18493663150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18493663150 is a deficient number, since it is larger than the sum of its proper divisors (15904550402).

18493663150 is a wasteful number, since it uses less digits than its factorization.

18493663150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369873275 (or 369873270 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 18493663150 in words is "eighteen billion, four hundred ninety-three million, six hundred sixty-three thousand, one hundred fifty".