73189197894 has 16 divisors (see below), whose sum is σ = 146381414400. Its totient is φ = 24395896200.

The previous prime is 73189197881. The next prime is 73189197901. The reversal of 73189197894 is 49879198137.

It is a happy 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 in 7 ways as a sum of consecutive naturals, for example, 300619 + ... + 486569.

It is an arithmetic number, because the mean of its divisors is an integer number (9148838400).

Almost surely, 2^73189197894 is an apocalyptic number.

73189197894 is an abundant number, since it is smaller than the sum of its proper divisors (73192216506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73189197894 is a wasteful number, since it uses less digits than its factorization.

73189197894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251555.

The product of its digits is 27433728, while the sum is 66.

The spelling of 73189197894 in words is "seventy-three billion, one hundred eighty-nine million, one hundred ninety-seven thousand, eight hundred ninety-four".