186168430993 has 8 divisors (see below), whose sum is σ = 187802798400. Its totient is φ = 184539196080.

The previous prime is 186168430969. The next prime is 186168430997. The reversal of 186168430993 is 399034861681.

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 186168430993 - 2³³ = 177578496401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (186168430997) 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, 1210243 + ... + 1355368.

It is an arithmetic number, because the mean of its divisors is an integer number (23475349800).

Almost surely, 2^186168430993 is an apocalyptic number.

It is an amenable number.

186168430993 is a deficient number, since it is larger than the sum of its proper divisors (1634367407).

186168430993 is a wasteful number, since it uses less digits than its factorization.

186168430993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566247.

The product of its (nonzero) digits is 6718464, while the sum is 58.

The spelling of 186168430993 in words is "one hundred eighty-six billion, one hundred sixty-eight million, four hundred thirty thousand, nine hundred ninety-three".