894881818 has 4 divisors (see below), whose sum is σ = 1342322730. Its totient is φ = 447440908.

The previous prime is 894881791. The next prime is 894881821. The reversal of 894881818 is 818188498.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 818188498 = 2 ⋅409094249.

It can be written as a sum of positive squares in only one way, i.e., 894787569 + 94249 = 29913^2 + 307^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223720453 + ... + 223720456.

Almost surely, 2^894881818 is an apocalyptic number.

894881818 is a deficient number, since it is larger than the sum of its proper divisors (447440912).

894881818 is a wasteful number, since it uses less digits than its factorization.

894881818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447440911.

The product of its digits is 1179648, while the sum is 55.

The square root of 894881818 is about 29914.5753438019. The cubic root of 894881818 is about 963.6557003785.

The spelling of 894881818 in words is "eight hundred ninety-four million, eight hundred eighty-one thousand, eight hundred eighteen".