18051193450 has 24 divisors (see below), whose sum is σ = 33591501792. Its totient is φ = 7216975920.

The previous prime is 18051193421. The next prime is 18051193469. The reversal of 18051193450 is 5439115081.

18051193450 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17857 + ... + 190843.

It is an arithmetic number, because the mean of its divisors is an integer number (1399645908).

Almost surely, 2^18051193450 is an apocalyptic number.

18051193450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18051193450 is a deficient number, since it is larger than the sum of its proper divisors (15540308342).

18051193450 is a wasteful number, since it uses less digits than its factorization.

18051193450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175086 (or 175081 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 18051193450 in words is "eighteen billion, fifty-one million, one hundred ninety-three thousand, four hundred fifty".