1814117886 has 72 divisors (see below), whose sum is σ = 4627592424. Its totient is φ = 512053920.

The previous prime is 1814117869. The next prime is 1814117941. The reversal of 1814117886 is 6887114181.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60816 + ... + 85596.

It is an arithmetic number, because the mean of its divisors is an integer number (64272117).

Almost surely, 2^1814117886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1814117886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2313796212).

1814117886 is an abundant number, since it is smaller than the sum of its proper divisors (2813474538).

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

1814117886 is a wasteful number, since it uses less digits than its factorization.

1814117886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24886 (or 24876 counting only the distinct ones).

The product of its digits is 86016, while the sum is 45.

The square root of 1814117886 is about 42592.4627839246. The cubic root of 1814117886 is about 1219.6124106945.

The spelling of 1814117886 in words is "one billion, eight hundred fourteen million, one hundred seventeen thousand, eight hundred eighty-six".