18857158573 has 8 divisors (see below), whose sum is σ = 20573603136. Its totient is φ = 17141073600.

The previous prime is 18857158571. The next prime is 18857158651. The reversal of 18857158573 is 37585175881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18857158573 - 2¹ = 18857158571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18857158571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26293 + ... + 195973.

It is an arithmetic number, because the mean of its divisors is an integer number (2571700392).

Almost surely, 2^18857158573 is an apocalyptic number.

It is an amenable number.

18857158573 is a deficient number, since it is larger than the sum of its proper divisors (1716444563).

18857158573 is a wasteful number, since it uses less digits than its factorization.

18857158573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179795.

The product of its digits is 9408000, while the sum is 58.

The spelling of 18857158573 in words is "eighteen billion, eight hundred fifty-seven million, one hundred fifty-eight thousand, five hundred seventy-three".