1993345975 has 12 divisors (see below), whose sum is σ = 2513644920. Its totient is φ = 1567647200.

The previous prime is 1993345967. The next prime is 1993346009. The reversal of 1993345975 is 5795433991.

It is not a de Polignac number, because 1993345975 - 2³ = 1993345967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 674236 + ... + 677185.

It is an arithmetic number, because the mean of its divisors is an integer number (209470410).

Almost surely, 2^1993345975 is an apocalyptic number.

1993345975 is a deficient number, since it is larger than the sum of its proper divisors (520298945).

1993345975 is a wasteful number, since it uses less digits than its factorization.

1993345975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351490 (or 1351485 counting only the distinct ones).

The product of its digits is 4592700, while the sum is 55.

The square root of 1993345975 is about 44646.9033080683. The cubic root of 1993345975 is about 1258.5222397658.

The spelling of 1993345975 in words is "one billion, nine hundred ninety-three million, three hundred forty-five thousand, nine hundred seventy-five".