492187819393 has 4 divisors (see below), whose sum is σ = 492742710720. Its totient is φ = 491632928068.

The previous prime is 492187819369. The next prime is 492187819399. The reversal of 492187819393 is 393918781294.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 393918781294 = 2 ⋅196959390647.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-492187819393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492187819399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277444333 + ... + 277446106.

It is an arithmetic number, because the mean of its divisors is an integer number (123185677680).

Almost surely, 2^492187819393 is an apocalyptic number.

It is an amenable number.

492187819393 is a deficient number, since it is larger than the sum of its proper divisors (554891327).

492187819393 is an equidigital number, since it uses as much as digits as its factorization.

492187819393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554891326.

The product of its digits is 23514624, while the sum is 64.

The spelling of 492187819393 in words is "four hundred ninety-two billion, one hundred eighty-seven million, eight hundred nineteen thousand, three hundred ninety-three".