1071809814 has 8 divisors (see below), whose sum is σ = 2143619640. Its totient is φ = 357269936.

The previous prime is 1071809803. The next prime is 1071809857. The reversal of 1071809814 is 4189081701.

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

1071809814 is an admirable number.

It is a super-2 number, since 2×1071809814² = 2297552554773429192, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89317479 + ... + 89317490.

It is an arithmetic number, because the mean of its divisors is an integer number (267952455).

Almost surely, 2^1071809814 is an apocalyptic number.

1071809814 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1071809814 is a wasteful number, since it uses less digits than its factorization.

1071809814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178634974.

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 1071809814 is about 32738.5065939178. The cubic root of 1071809814 is about 1023.3854618293.

The spelling of 1071809814 in words is "one billion, seventy-one million, eight hundred nine thousand, eight hundred fourteen".