19216869 has 24 divisors (see below), whose sum is σ = 30774528. Its totient is φ = 10624320.

The previous prime is 19216859. The next prime is 19216871. The reversal of 19216869 is 96861291.

It is not a de Polignac number, because 19216869 - 2¹² = 19212773 is a prime.

It is a super-2 number, since 2×19216869² = 738576108326322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19216869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19216819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2449 + ... + 6665.

It is an arithmetic number, because the mean of its divisors is an integer number (1282272).

Almost surely, 2^19216869 is an apocalyptic number.

It is an amenable number.

19216869 is a deficient number, since it is larger than the sum of its proper divisors (11557659).

19216869 is a wasteful number, since it uses less digits than its factorization.

19216869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265 (or 4258 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 19216869 is about 4383.7049398882. The cubic root of 19216869 is about 267.8515783581.

The spelling of 19216869 in words is "nineteen million, two hundred sixteen thousand, eight hundred sixty-nine".