870044018 has 4 divisors (see below), whose sum is σ = 1305066030. Its totient is φ = 435022008.

The previous prime is 870044017. The next prime is 870044027. The reversal of 870044018 is 810440078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 714867169 + 155176849 = 26737^2 + 12457^2 .

It is not an unprimeable number, because it can be changed into a prime (870044017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217511003 + ... + 217511006.

Almost surely, 2^870044018 is an apocalyptic number.

870044018 is a deficient number, since it is larger than the sum of its proper divisors (435022012).

870044018 is a wasteful number, since it uses less digits than its factorization.

870044018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435022011.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 870044018 is about 29496.5085730498. The cubic root of 870044018 is about 954.6563708007.

The spelling of 870044018 in words is "eight hundred seventy million, forty-four thousand, eighteen".