1973395993 has 8 divisors (see below), whose sum is σ = 2085955200. Its totient is φ = 1861706448.

The previous prime is 1973395981. The next prime is 1973395997. The reversal of 1973395993 is 3995933791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1973395993 - 2²¹ = 1971298841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1973395997) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 212746 + ... + 221827.

It is an arithmetic number, because the mean of its divisors is an integer number (260744400).

Almost surely, 2^1973395993 is an apocalyptic number.

It is an amenable number.

1973395993 is a deficient number, since it is larger than the sum of its proper divisors (112559207).

1973395993 is a wasteful number, since it uses less digits than its factorization.

1973395993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434831.

The product of its digits is 6200145, while the sum is 58.

The square root of 1973395993 is about 44422.9219322638. The cubic root of 1973395993 is about 1254.3096032869.

The spelling of 1973395993 in words is "one billion, nine hundred seventy-three million, three hundred ninety-five thousand, nine hundred ninety-three".