73394472918 has 24 divisors (see below), whose sum is σ = 158948979048. Its totient is φ = 22582914432.

The previous prime is 73394472917. The next prime is 73394472937. The reversal of 73394472918 is 81927449337.

It is a happy number.

It is a super-2 number, since 2×73394472918² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73394472913) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 36189555 + ... + 36191582.

It is an arithmetic number, because the mean of its divisors is an integer number (6622874127).

Almost surely, 2^73394472918 is an apocalyptic number.

73394472918 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

73394472918 is an abundant number, since it is smaller than the sum of its proper divisors (85554506130).

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

73394472918 is a wasteful number, since it uses less digits than its factorization.

73394472918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72381168 (or 72381155 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 57.

The spelling of 73394472918 in words is "seventy-three billion, three hundred ninety-four million, four hundred seventy-two thousand, nine hundred eighteen".