30972189693 has 16 divisors (see below), whose sum is σ = 43549253120. Its totient is φ = 19525602096.

The previous prime is 30972189679. The next prime is 30972189727. The reversal of 30972189693 is 39698127903.

It is not a de Polignac number, because 30972189693 - 2¹⁰ = 30972188669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30972181693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465505 + ... + 527862.

It is an arithmetic number, because the mean of its divisors is an integer number (2721828320).

Almost surely, 2^30972189693 is an apocalyptic number.

It is an amenable number.

30972189693 is a deficient number, since it is larger than the sum of its proper divisors (12577063427).

30972189693 is a wasteful number, since it uses less digits than its factorization.

30972189693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993936.

The product of its (nonzero) digits is 4408992, while the sum is 57.

The spelling of 30972189693 in words is "thirty billion, nine hundred seventy-two million, one hundred eighty-nine thousand, six hundred ninety-three".