185185231493 has 4 divisors (see below), whose sum is σ = 187949190240. Its totient is φ = 182421272748.

The previous prime is 185185231477. The next prime is 185185231501. The reversal of 185185231493 is 394132581581.

185185231493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 185185231493 - 2⁴ = 185185231477 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 (185185201493) 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, 1381979273 + ... + 1381979406.

It is an arithmetic number, because the mean of its divisors is an integer number (46987297560).

Almost surely, 2^185185231493 is an apocalyptic number.

It is an amenable number.

185185231493 is a deficient number, since it is larger than the sum of its proper divisors (2763958747).

185185231493 is an equidigital number, since it uses as much as digits as its factorization.

185185231493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763958746.

The product of its digits is 1036800, while the sum is 50.

The spelling of 185185231493 in words is "one hundred eighty-five billion, one hundred eighty-five million, two hundred thirty-one thousand, four hundred ninety-three".