19004471197 has 16 divisors (see below), whose sum is σ = 20088921600. Its totient is φ = 17949052800.

The previous prime is 19004471149. The next prime is 19004471273. The reversal of 19004471197 is 79117440091.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19004471197 is a prime.

It is a super-2 number, since 2×19004471197² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19004471797) 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, 4521697 + ... + 4525897.

It is an arithmetic number, because the mean of its divisors is an integer number (1255557600).

Almost surely, 2^19004471197 is an apocalyptic number.

It is an amenable number.

19004471197 is a deficient number, since it is larger than the sum of its proper divisors (1084450403).

19004471197 is a wasteful number, since it uses less digits than its factorization.

19004471197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7596.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 19004471197 in words is "nineteen billion, four million, four hundred seventy-one thousand, one hundred ninety-seven".