19447189134 has 32 divisors (see below), whose sum is σ = 41395704480. Its totient is φ = 6069460992.

The previous prime is 19447189133. The next prime is 19447189163. The reversal of 19447189134 is 43198174491.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19447189133) 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, 474249 + ... + 513620.

It is an arithmetic number, because the mean of its divisors is an integer number (1293615765).

Almost surely, 2^19447189134 is an apocalyptic number.

19447189134 is an abundant number, since it is smaller than the sum of its proper divisors (21948515346).

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

19447189134 is a wasteful number, since it uses less digits than its factorization.

19447189134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988084.

The product of its digits is 870912, while the sum is 51.

The spelling of 19447189134 in words is "nineteen billion, four hundred forty-seven million, one hundred eighty-nine thousand, one hundred thirty-four".