19190102 has 4 divisors (see below), whose sum is σ = 28785156. Its totient is φ = 9595050.

The previous prime is 19190089. The next prime is 19190111. The reversal of 19190102 is 20109191.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4797524 + ... + 4797527.

It is an arithmetic number, because the mean of its divisors is an integer number (7196289).

Almost surely, 2^19190102 is an apocalyptic number.

19190102 is a deficient number, since it is larger than the sum of its proper divisors (9595054).

19190102 is an equidigital number, since it uses as much as digits as its factorization.

19190102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9595053.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 19190102 is about 4380.6508648830. The cubic root of 19190102 is about 267.7271579059.

Adding to 19190102 its reverse (20109191), we get a palindrome (39299293).

The spelling of 19190102 in words is "nineteen million, one hundred ninety thousand, one hundred two".