1993845446 has 16 divisors (see below), whose sum is σ = 3159558960. Its totient is φ = 941038560.

The previous prime is 1993845443. The next prime is 1993845449. The reversal of 1993845446 is 6445483991.

It is an interprime number because it is at equal distance from previous prime (1993845443) and next prime (1993845449).

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 (1993845443) 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 7 ways as a sum of consecutive naturals, for example, 84185 + ... + 105236.

It is an arithmetic number, because the mean of its divisors is an integer number (197472435).

Almost surely, 2^1993845446 is an apocalyptic number.

1993845446 is a deficient number, since it is larger than the sum of its proper divisors (1165713514).

1993845446 is a wasteful number, since it uses less digits than its factorization.

1993845446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189719.

The product of its digits is 3732480, while the sum is 53.

The square root of 1993845446 is about 44652.4965259503. The cubic root of 1993845446 is about 1258.6273466020.

The spelling of 1993845446 in words is "one billion, nine hundred ninety-three million, eight hundred forty-five thousand, four hundred forty-six".