845037181018 has 4 divisors (see below), whose sum is σ = 1267555771530. Its totient is φ = 422518590508.

The previous prime is 845037181003. The next prime is 845037181099. The reversal of 845037181018 is 810181730548.

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., 744349641049 + 100687539969 = 862757^2 + 317313^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211259295253 + ... + 211259295256.

Almost surely, 2^845037181018 is an apocalyptic number.

845037181018 is a deficient number, since it is larger than the sum of its proper divisors (422518590512).

845037181018 is a wasteful number, since it uses less digits than its factorization.

845037181018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422518590511.

The product of its (nonzero) digits is 215040, while the sum is 46.

The spelling of 845037181018 in words is "eight hundred forty-five billion, thirty-seven million, one hundred eighty-one thousand, eighteen".