1816075685 has 8 divisors (see below), whose sum is σ = 2179957536. Its totient is φ = 1452416080.

The previous prime is 1816075661. The next prime is 1816075693. The reversal of 1816075685 is 5865706181.

It is a happy number.

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

It is not a de Polignac number, because 1816075685 - 2¹⁰ = 1816074661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37019 + ... + 70728.

It is an arithmetic number, because the mean of its divisors is an integer number (272494692).

Almost surely, 2^1816075685 is an apocalyptic number.

It is an amenable number.

1816075685 is a deficient number, since it is larger than the sum of its proper divisors (363881851).

1816075685 is a wasteful number, since it uses less digits than its factorization.

1816075685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111123.

The product of its (nonzero) digits is 403200, while the sum is 47.

The square root of 1816075685 is about 42615.4395143356. The cubic root of 1816075685 is about 1220.0509888660.

The spelling of 1816075685 in words is "one billion, eight hundred sixteen million, seventy-five thousand, six hundred eighty-five".