19002109 has 8 divisors (see below), whose sum is σ = 22859840. Its totient is φ = 15430176.

The previous prime is 19002089. The next prime is 19002131. The reversal of 19002109 is 90120091.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19002109 is a prime.

It is a super-2 number, since 2×19002109² = 722160292895762, which contains 22 as substring.

It is a Duffinian number.

19002109 is a modest number, since divided by 2109 gives 19 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 19002109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19002169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71304 + ... + 71569.

It is an arithmetic number, because the mean of its divisors is an integer number (2857480).

Almost surely, 2^19002109 is an apocalyptic number.

19002109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19002109 is a deficient number, since it is larger than the sum of its proper divisors (3857731).

19002109 is a wasteful number, since it uses less digits than its factorization.

19002109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142899.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 19002109 is about 4359.1408557192. The cubic root of 19002109 is about 266.8500375930.

The spelling of 19002109 in words is "nineteen million, two thousand, one hundred nine".