19164043797 has 8 divisors (see below), whose sum is σ = 25571886720. Its totient is φ = 12766115040.

The previous prime is 19164043793. The next prime is 19164043837. The reversal of 19164043797 is 79734046191.

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

It is not a de Polignac number, because 19164043797 - 2² = 19164043793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19164043793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2474029 + ... + 2481762.

It is an arithmetic number, because the mean of its divisors is an integer number (3196485840).

Almost surely, 2^19164043797 is an apocalyptic number.

It is an amenable number.

19164043797 is a deficient number, since it is larger than the sum of its proper divisors (6407842923).

19164043797 is a wasteful number, since it uses less digits than its factorization.

19164043797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957083.

The product of its (nonzero) digits is 1143072, while the sum is 51.

The spelling of 19164043797 in words is "nineteen billion, one hundred sixty-four million, forty-three thousand, seven hundred ninety-seven".