30573209893 has 4 divisors (see below), whose sum is σ = 31627458540. Its totient is φ = 29518961248.

The previous prime is 30573209873. The next prime is 30573209917. The reversal of 30573209893 is 39890237503.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39890237503 = 17 ⋅2346484559.

It can be written as a sum of positive squares in 2 ways, for example, as 21473385444 + 9099824449 = 146538^2 + 95393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30573209893 is a prime.

It is a super-2 number, since 2×30573209893² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30573209873) 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 3 ways as a sum of consecutive naturals, for example, 527124280 + ... + 527124337.

It is an arithmetic number, because the mean of its divisors is an integer number (7906864635).

Almost surely, 2^30573209893 is an apocalyptic number.

It is an amenable number.

30573209893 is a deficient number, since it is larger than the sum of its proper divisors (1054248647).

30573209893 is a wasteful number, since it uses less digits than its factorization.

30573209893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054248646.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 30573209893 in words is "thirty billion, five hundred seventy-three million, two hundred nine thousand, eight hundred ninety-three".