185193378422 has 32 divisors (see below), whose sum is σ = 306262645920. Its totient is φ = 83446030080.

The previous prime is 185193378421. The next prime is 185193378457. The reversal of 185193378422 is 224873391581.

It is a super-2 number, since 2×185193378422² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185193378421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2354954 + ... + 2432322.

It is an arithmetic number, because the mean of its divisors is an integer number (9570707685).

Almost surely, 2^185193378422 is an apocalyptic number.

185193378422 is a deficient number, since it is larger than the sum of its proper divisors (121069267498).

185193378422 is a wasteful number, since it uses less digits than its factorization.

185193378422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79568.

The product of its digits is 2903040, while the sum is 53.

The spelling of 185193378422 in words is "one hundred eighty-five billion, one hundred ninety-three million, three hundred seventy-eight thousand, four hundred twenty-two".