19421119 has 8 divisors (see below), whose sum is σ = 19859840. Its totient is φ = 18986400.

The previous prime is 19421113. The next prime is 19421141. The reversal of 19421119 is 91112491.

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 19421119 - 2³ = 19421111 is a prime.

It is a super-2 number, since 2×19421119² = 754359726424322, which 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 (19421111) 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, 10162 + ... + 11920.

It is an arithmetic number, because the mean of its divisors is an integer number (2482480).

Almost surely, 2^19421119 is an apocalyptic number.

19421119 is a deficient number, since it is larger than the sum of its proper divisors (438721).

19421119 is a wasteful number, since it uses less digits than its factorization.

19421119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001.

The product of its digits is 648, while the sum is 28.

The square root of 19421119 is about 4406.9398679810. The cubic root of 19421119 is about 268.7972057695.

The spelling of 19421119 in words is "nineteen million, four hundred twenty-one thousand, one hundred nineteen".