18019800350 has 24 divisors (see below), whose sum is σ = 33535792560. Its totient is φ = 7203841920.

The previous prime is 18019800341. The next prime is 18019800377. The reversal of 18019800350 is 5300891081.

It is a self number, because there is not a number n which added to its sum of digits gives 18019800350.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11915 + ... + 190214.

It is an arithmetic number, because the mean of its divisors is an integer number (1397324690).

Almost surely, 2^18019800350 is an apocalyptic number.

18019800350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18019800350 is a deficient number, since it is larger than the sum of its proper divisors (15515992210).

18019800350 is a wasteful number, since it uses less digits than its factorization.

18019800350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203924 (or 203919 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 18019800350 in words is "eighteen billion, nineteen million, eight hundred thousand, three hundred fifty".