19134419 has 4 divisors (see below), whose sum is σ = 19448160. Its totient is φ = 18820680.

The previous prime is 19134397. The next prime is 19134433. The reversal of 19134419 is 91443191.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19134419 is a prime.

It is a super-2 number, since 2×19134419² = 732251980935122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19134449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156779 + ... + 156900.

It is an arithmetic number, because the mean of its divisors is an integer number (4862040).

Almost surely, 2^19134419 is an apocalyptic number.

19134419 is a deficient number, since it is larger than the sum of its proper divisors (313741).

19134419 is an equidigital number, since it uses as much as digits as its factorization.

19134419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313740.

The product of its digits is 3888, while the sum is 32.

The square root of 19134419 is about 4374.2906853569. The cubic root of 19134419 is about 267.4679566823.

The spelling of 19134419 in words is "nineteen million, one hundred thirty-four thousand, four hundred nineteen".