19742184870913 has 16 divisors (see below), whose sum is σ = 21132967046400. Its totient is φ = 18386895300480.

The previous prime is 19742184870887. The next prime is 19742184870937. The reversal of 19742184870913 is 31907848124791.

It is a cyclic number.

It is not a de Polignac number, because 19742184870913 - 2³⁷ = 19604745917441 is a prime.

It is a super-2 number, since 2×19742184870913² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19742184870973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2234953 + ... + 6669286.

It is an arithmetic number, because the mean of its divisors is an integer number (1320810440400).

Almost surely, 2^{19742184870913} is an apocalyptic number.

It is an amenable number.

19742184870913 is a deficient number, since it is larger than the sum of its proper divisors (1390782175487).

19742184870913 is a wasteful number, since it uses less digits than its factorization.

19742184870913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8906232.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 19742184870913 in words is "nineteen trillion, seven hundred forty-two billion, one hundred eighty-four million, eight hundred seventy thousand, nine hundred thirteen".