19116873 has 12 divisors (see below), whose sum is σ = 27687348. Its totient is φ = 12710400.

The previous prime is 19116871. The next prime is 19116883. The reversal of 19116873 is 37861191.

It can be written as a sum of positive squares in 2 ways, for example, as 17740944 + 1375929 = 4212^2 + 1173^2 .

It is not a de Polignac number, because 19116873 - 2¹ = 19116871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19116871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 961 + ... + 6257.

It is an arithmetic number, because the mean of its divisors is an integer number (2307279).

Almost surely, 2^19116873 is an apocalyptic number.

It is an amenable number.

19116873 is a deficient number, since it is larger than the sum of its proper divisors (8570475).

19116873 is a wasteful number, since it uses less digits than its factorization.

19116873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704 (or 5701 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 19116873 is about 4372.2846430671. The cubic root of 19116873 is about 267.3861768633.

The spelling of 19116873 in words is "nineteen million, one hundred sixteen thousand, eight hundred seventy-three".