19109034 has 96 divisors (see below), whose sum is σ = 50633856. Its totient is φ = 5287680.

The previous prime is 19109033. The next prime is 19109047. The reversal of 19109034 is 43090191.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 19108989 and 19109007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19109033) 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 47 ways as a sum of consecutive naturals, for example, 139414 + ... + 139550.

It is an arithmetic number, because the mean of its divisors is an integer number (527436).

Almost surely, 2^19109034 is an apocalyptic number.

19109034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19109034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25316928).

19109034 is an abundant number, since it is smaller than the sum of its proper divisors (31524822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19109034 is a wasteful number, since it uses less digits than its factorization.

19109034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 19109034 is about 4371.3881090564. The cubic root of 19109034 is about 267.3496240441.

The spelling of 19109034 in words is "nineteen million, one hundred nine thousand, thirty-four".