9819167494 has 4 divisors (see below), whose sum is σ = 14728751244. Its totient is φ = 4909583746.

The previous prime is 9819167489. The next prime is 9819167539. The reversal of 9819167494 is 4947619189.

9819167494 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

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 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 as a sum of consecutive naturals, namely, 2454791872 + ... + 2454791875.

It is an arithmetic number, because the mean of its divisors is an integer number (3682187811).

Almost surely, 2^9819167494 is an apocalyptic number.

9819167494 is a deficient number, since it is larger than the sum of its proper divisors (4909583750).

9819167494 is a wasteful number, since it uses less digits than its factorization.

9819167494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4909583749.

The product of its digits is 3919104, while the sum is 58.

The square root of 9819167494 is about 99091.7125394450. The cubic root of 9819167494 is about 2141.3692211424.

The spelling of 9819167494 in words is "nine billion, eight hundred nineteen million, one hundred sixty-seven thousand, four hundred ninety-four".