561219819 has 8 divisors (see below), whose sum is σ = 748410432. Its totient is φ = 374087880.

The previous prime is 561219817. The next prime is 561219823. The reversal of 561219819 is 918912165.

561219819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 561219819 - 2¹ = 561219817 is a prime.

It is a super-2 number, since 2×561219819² = 629935370476785522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561219817) 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, 18132 + ... + 38094.

It is an arithmetic number, because the mean of its divisors is an integer number (93551304).

Almost surely, 2^561219819 is an apocalyptic number.

561219819 is a deficient number, since it is larger than the sum of its proper divisors (187190613).

561219819 is a wasteful number, since it uses less digits than its factorization.

561219819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29337.

The product of its digits is 38880, while the sum is 42.

The square root of 561219819 is about 23690.0784929050. The cubic root of 561219819 is about 824.8551047647.

The spelling of 561219819 in words is "five hundred sixty-one million, two hundred nineteen thousand, eight hundred nineteen".