19434190 has 8 divisors (see below), whose sum is σ = 34981560. Its totient is φ = 7773672.

The previous prime is 19434161. The next prime is 19434193. The reversal of 19434190 is 9143491.

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

It is a super-2 number, since 2×19434190² = 755375481912200, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19434193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971700 + ... + 971719.

It is an arithmetic number, because the mean of its divisors is an integer number (4372695).

Almost surely, 2^19434190 is an apocalyptic number.

19434190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19434190 is a deficient number, since it is larger than the sum of its proper divisors (15547370).

19434190 is a wasteful number, since it uses less digits than its factorization.

19434190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943426.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 19434190 is about 4408.4226203938. The cubic root of 19434190 is about 268.8574951269.

The spelling of 19434190 in words is "nineteen million, four hundred thirty-four thousand, one hundred ninety".