19797077893 has 8 divisors (see below), whose sum is σ = 20136586176. Its totient is φ = 19459255200.

The previous prime is 19797077851. The next prime is 19797077897. The reversal of 19797077893 is 39877079791.

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

It is a cyclic number.

It is not a de Polignac number, because 19797077893 - 2²⁹ = 19260206981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19797077897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397696 + ... + 444697.

It is an arithmetic number, because the mean of its divisors is an integer number (2517073272).

Almost surely, 2^19797077893 is an apocalyptic number.

It is an amenable number.

19797077893 is a deficient number, since it is larger than the sum of its proper divisors (339508283).

19797077893 is an equidigital number, since it uses as much as digits as its factorization.

19797077893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842795.

The product of its (nonzero) digits is 42007896, while the sum is 67.

The spelling of 19797077893 in words is "nineteen billion, seven hundred ninety-seven million, seventy-seven thousand, eight hundred ninety-three".