6018991812 has 18 divisors (see below), whose sum is σ = 15214673838. Its totient is φ = 2006330592.

The previous prime is 6018991801. The next prime is 6018991841. The reversal of 6018991812 is 2181998106.

It can be written as a sum of positive squares in only one way, i.e., 5773568256 + 245423556 = 75984^2 + 15666^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83597073 + ... + 83597144.

Almost surely, 2^6018991812 is an apocalyptic number.

It is an amenable number.

6018991812 is an abundant number, since it is smaller than the sum of its proper divisors (9195682026).

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

6018991812 is a wasteful number, since it uses less digits than its factorization.

6018991812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167194227 (or 167194222 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The square root of 6018991812 is about 77582.1616868208. The cubic root of 6018991812 is about 1819.0358186442.

The spelling of 6018991812 in words is "six billion, eighteen million, nine hundred ninety-one thousand, eight hundred twelve".