18894219754 has 4 divisors (see below), whose sum is σ = 28341329634. Its totient is φ = 9447109876.

The previous prime is 18894219731. The next prime is 18894219803. The reversal of 18894219754 is 45791249881.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16673265625 + 2220954129 = 129125^2 + 47127^2 .

It is a super-2 number, since 2×18894219754² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4723554937 + ... + 4723554940.

Almost surely, 2^18894219754 is an apocalyptic number.

18894219754 is a deficient number, since it is larger than the sum of its proper divisors (9447109880).

18894219754 is an equidigital number, since it uses as much as digits as its factorization.

18894219754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9447109879.

The product of its digits is 5806080, while the sum is 58.

The spelling of 18894219754 in words is "eighteen billion, eight hundred ninety-four million, two hundred nineteen thousand, seven hundred fifty-four".