22145919 has 8 divisors (see below), whose sum is σ = 29571840. Its totient is φ = 14741976.

The previous prime is 22145911. The next prime is 22145923. The reversal of 22145919 is 91954122.

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

It is not a de Polignac number, because 22145919 - 2³ = 22145911 is a prime.

It is a super-3 number, since 3×22145919³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 22145919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2977 + ... + 7290.

It is an arithmetic number, because the mean of its divisors is an integer number (3696480).

Almost surely, 2^22145919 is an apocalyptic number.

22145919 is a deficient number, since it is larger than the sum of its proper divisors (7425921).

22145919 is a wasteful number, since it uses less digits than its factorization.

22145919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10989.

The product of its digits is 6480, while the sum is 33.

The square root of 22145919 is about 4705.9450698027. The cubic root of 22145919 is about 280.8220696163.

The spelling of 22145919 in words is "twenty-two million, one hundred forty-five thousand, nine hundred nineteen".