19027436794891 has 16 divisors (see below), whose sum is σ = 21755977463808. Its totient is φ = 16301481134400.

The previous prime is 19027436794867. The next prime is 19027436794939. The reversal of 19027436794891 is 19849763472091.

It is not a de Polignac number, because 19027436794891 - 2¹⁷ = 19027436663819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19027436794891.

It is not an unprimeable number, because it can be changed into a prime (19027436794831) 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, 235795071 + ... + 235875751.

It is an arithmetic number, because the mean of its divisors is an integer number (1359748591488).

Almost surely, 2^{19027436794891} is an apocalyptic number.

19027436794891 is a deficient number, since it is larger than the sum of its proper divisors (2728540668917).

19027436794891 is a wasteful number, since it uses less digits than its factorization.

19027436794891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96282.

The product of its (nonzero) digits is 164602368, while the sum is 70.

The spelling of 19027436794891 in words is "nineteen trillion, twenty-seven billion, four hundred thirty-six million, seven hundred ninety-four thousand, eight hundred ninety-one".