73654064189 has 4 divisors (see below), whose sum is σ = 73654609980. Its totient is φ = 73653518400.

The previous prime is 73654064177. The next prime is 73654064227. The reversal of 73654064189 is 98146045637.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98146045637 = 206933 ⋅474289.

It can be written as a sum of positive squares in 2 ways, for example, as 3701748964 + 69952315225 = 60842^2 + 264485^2 .

It is a cyclic number.

It is not a de Polignac number, because 73654064189 - 2²⁰ = 73653015613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73654064189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73654069189) 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 3 ways as a sum of consecutive naturals, for example, 93557 + ... + 395045.

It is an arithmetic number, because the mean of its divisors is an integer number (18413652495).

Almost surely, 2^73654064189 is an apocalyptic number.

It is an amenable number.

73654064189 is a deficient number, since it is larger than the sum of its proper divisors (545791).

73654064189 is a wasteful number, since it uses less digits than its factorization.

73654064189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545790.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 73654064189 in words is "seventy-three billion, six hundred fifty-four million, sixty-four thousand, one hundred eighty-nine".