19913289027 has 8 divisors (see below), whose sum is σ = 26559041040. Its totient is φ = 13271531520.

The previous prime is 19913289001. The next prime is 19913289079. The reversal of 19913289027 is 72098231991.

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

It is not a de Polignac number, because 19913289027 - 2¹⁸ = 19913026883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19913289427) 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, 986974 + ... + 1006947.

It is an arithmetic number, because the mean of its divisors is an integer number (3319880130).

Almost surely, 2^19913289027 is an apocalyptic number.

19913289027 is a deficient number, since it is larger than the sum of its proper divisors (6645752013).

19913289027 is a wasteful number, since it uses less digits than its factorization.

19913289027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997253.

The product of its (nonzero) digits is 489888, while the sum is 51.

The spelling of 19913289027 in words is "nineteen billion, nine hundred thirteen million, two hundred eighty-nine thousand, twenty-seven".