1993509180636 has 24 divisors (see below), whose sum is σ = 4811918712720. Its totient is φ = 641589161472.

The previous prime is 1993509180629. The next prime is 1993509180647. The reversal of 1993509180636 is 6360819053991.

It is a self number, because there is not a number n which added to its sum of digits gives 1993509180636.

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 7 ways as a sum of consecutive naturals, for example, 2864236981 + ... + 2864237676.

It is an arithmetic number, because the mean of its divisors is an integer number (200496613030).

Almost surely, 2^{1993509180636} is an apocalyptic number.

It is an amenable number.

1993509180636 is an abundant number, since it is smaller than the sum of its proper divisors (2818409532084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1993509180636 is a wasteful number, since it uses less digits than its factorization.

1993509180636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5728474693 (or 5728474691 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 60.

The spelling of 1993509180636 in words is "one trillion, nine hundred ninety-three billion, five hundred nine million, one hundred eighty thousand, six hundred thirty-six".