1989734627363 has 16 divisors (see below), whose sum is σ = 2305296023040. Its totient is φ = 1682004937536.

The previous prime is 1989734627333. The next prime is 1989734627399. The reversal of 1989734627363 is 3637264379891.

It is not a de Polignac number, because 1989734627363 - 2⁸ = 1989734627107 is a prime.

It is a Smith number, since the sum of its digits (68) 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 junction number, because it is equal to n+sod(n) for n = 1989734627293 and 1989734627302.

It is not an unprimeable number, because it can be changed into a prime (1989734627333) 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, 7503506 + ... + 7764152.

It is an arithmetic number, because the mean of its divisors is an integer number (144081001440).

Almost surely, 2^{1989734627363} is an apocalyptic number.

1989734627363 is a deficient number, since it is larger than the sum of its proper divisors (315561395677).

1989734627363 is a wasteful number, since it uses less digits than its factorization.

1989734627363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275666.

The product of its digits is 246903552, while the sum is 68.

The spelling of 1989734627363 in words is "one trillion, nine hundred eighty-nine billion, seven hundred thirty-four million, six hundred twenty-seven thousand, three hundred sixty-three".