19849683312 has 40 divisors (see below), whose sum is σ = 56975944080. Its totient is φ = 6616560960.

The previous prime is 19849683311. The next prime is 19849683319. The reversal of 19849683312 is 21338694891.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19849683311) 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, 22973739 + ... + 22974602.

It is an arithmetic number, because the mean of its divisors is an integer number (1424398602).

Almost surely, 2^19849683312 is an apocalyptic number.

19849683312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19849683312 is an abundant number, since it is smaller than the sum of its proper divisors (37126260768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19849683312 is a wasteful number, since it uses less digits than its factorization.

19849683312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45948358 (or 45948346 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 19849683312 in words is "nineteen billion, eight hundred forty-nine million, six hundred eighty-three thousand, three hundred twelve".