1840423193 has 12 divisors (see below), whose sum is σ = 2146884480. Its totient is φ = 1573096392.

The previous prime is 1840423171. The next prime is 1840423217. The reversal of 1840423193 is 3913240481.

It is not a de Polignac number, because 1840423193 - 2⁸ = 1840422937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1840423493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34721 + ... + 69902.

It is an arithmetic number, because the mean of its divisors is an integer number (178907040).

Almost surely, 2^1840423193 is an apocalyptic number.

It is an amenable number.

1840423193 is a deficient number, since it is larger than the sum of its proper divisors (306461287).

1840423193 is a wasteful number, since it uses less digits than its factorization.

1840423193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104996 (or 104989 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1840423193 is about 42900.1537642932. The cubic root of 1840423193 is about 1225.4790724841.

The spelling of 1840423193 in words is "one billion, eight hundred forty million, four hundred twenty-three thousand, one hundred ninety-three".