19002113 has 4 divisors (see below), whose sum is σ = 20463828. Its totient is φ = 17540400.

The previous prime is 19002089. The next prime is 19002131. The reversal of 19002113 is 31120091.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7360369 + 11641744 = 2713^2 + 3412^2 .

It is a cyclic number.

It is not a de Polignac number, because 19002113 - 2¹⁰ = 19001089 is a prime.

It is a super-2 number, since 2×19002113² = 722160596929538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19002091 and 19002100.

It is not an unprimeable number, because it can be changed into a prime (19002913) 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, 730838 + ... + 730863.

It is an arithmetic number, because the mean of its divisors is an integer number (5115957).

Almost surely, 2^19002113 is an apocalyptic number.

19002113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19002113 is a deficient number, since it is larger than the sum of its proper divisors (1461715).

19002113 is a wasteful number, since it uses less digits than its factorization.

19002113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461714.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 19002113 is about 4359.1413145251. The cubic root of 19002113 is about 266.8500563173.

The spelling of 19002113 in words is "nineteen million, two thousand, one hundred thirteen".