19843423414 has 32 divisors (see below), whose sum is σ = 31786634880. Its totient is φ = 9263253312.

The previous prime is 19843423399. The next prime is 19843423429. The reversal of 19843423414 is 41432434891.

It is an interprime number because it is at equal distance from previous prime (19843423399) and next prime (19843423429).

It is a super-2 number, since 2×19843423414² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4955137 + ... + 4959139.

It is an arithmetic number, because the mean of its divisors is an integer number (993332340).

Almost surely, 2^19843423414 is an apocalyptic number.

19843423414 is a deficient number, since it is larger than the sum of its proper divisors (11943211466).

19843423414 is a wasteful number, since it uses less digits than its factorization.

19843423414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884.

The product of its digits is 331776, while the sum is 43.

The spelling of 19843423414 in words is "nineteen billion, eight hundred forty-three million, four hundred twenty-three thousand, four hundred fourteen".