19100106 has 12 divisors (see below), whose sum is σ = 41383602. Its totient is φ = 6366696.

The previous prime is 19100101. The next prime is 19100113. The reversal of 19100106 is 60100191.

It can be written as a sum of positive squares in only one way, i.e., 19000881 + 99225 = 4359^2 + 315^2 .

It is a super-2 number, since 2×19100106² = 729628098422472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1061117 = 19100106 / (1 + 9 + 1 + 0 + 0 + 1 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (19100101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 530541 + ... + 530576.

Almost surely, 2^19100106 is an apocalyptic number.

19100106 is an abundant number, since it is smaller than the sum of its proper divisors (22283496).

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

19100106 is a wasteful number, since it uses less digits than its factorization.

19100106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061125 (or 1061122 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 19100106 is about 4370.3668038278. The cubic root of 19100106 is about 267.3079811006.

Adding to 19100106 its reverse (60100191), we get a palindrome (79200297).

The spelling of 19100106 in words is "nineteen million, one hundred thousand, one hundred six".