19782100469 has 8 divisors (see below), whose sum is σ = 20131994208. Its totient is φ = 19433032560.

The previous prime is 19782100453. The next prime is 19782100493. The reversal of 19782100469 is 96400128791.

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 19782100469 - 2⁴ = 19782100453 is a prime.

It is a super-2 number, since 2×19782100469² (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 (19782102469) 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, 158027 + ... + 254040.

It is an arithmetic number, because the mean of its divisors is an integer number (2516499276).

Almost surely, 2^19782100469 is an apocalyptic number.

It is an amenable number.

19782100469 is a deficient number, since it is larger than the sum of its proper divisors (349893739).

19782100469 is an equidigital number, since it uses as much as digits as its factorization.

19782100469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412915.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 19782100469 in words is "nineteen billion, seven hundred eighty-two million, one hundred thousand, four hundred sixty-nine".