10809819 has 12 divisors (see below), whose sum is σ = 15643992. Its totient is φ = 7192800.

The previous prime is 10809811. The next prime is 10809823. The reversal of 10809819 is 91890801.

It is not a de Polignac number, because 10809819 - 2³ = 10809811 is a prime.

It is a super-2 number, since 2×10809819² = 233704373625522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10809811) 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, 6559 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (1303666).

Almost surely, 2^10809819 is an apocalyptic number.

10809819 is a deficient number, since it is larger than the sum of its proper divisors (4834173).

10809819 is a wasteful number, since it uses less digits than its factorization.

10809819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 10809819 is about 3287.8289189068. The cubic root of 10809819 is about 221.1088576003.

It can be divided in two parts, 10809 and 819, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 10809819 in words is "ten million, eight hundred nine thousand, eight hundred nineteen".