19819930486 has 8 divisors (see below), whose sum is σ = 30173625720. Its totient is φ = 9762055248.

The previous prime is 19819930483. The next prime is 19819930513. The reversal of 19819930486 is 68403991891.

19819930486 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 19819930486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19819930483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73954831 + ... + 73955098.

It is an arithmetic number, because the mean of its divisors is an integer number (3771703215).

Almost surely, 2^19819930486 is an apocalyptic number.

19819930486 is a deficient number, since it is larger than the sum of its proper divisors (10353695234).

19819930486 is a wasteful number, since it uses less digits than its factorization.

19819930486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147909998.

The product of its (nonzero) digits is 3359232, while the sum is 58.

The spelling of 19819930486 in words is "nineteen billion, eight hundred nineteen million, nine hundred thirty thousand, four hundred eighty-six".