1018406804 has 18 divisors (see below), whose sum is σ = 1844289930. Its totient is φ = 491478736.

The previous prime is 1018406801. The next prime is 1018406827. The reversal of 1018406804 is 4086048101.

It can be written as a sum of positive squares in only one way, i.e., 877936900 + 140469904 = 29630^2 + 11852^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018406801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 342227 + ... + 345189.

Almost surely, 2^1018406804 is an apocalyptic number.

It is an amenable number.

1018406804 is a deficient number, since it is larger than the sum of its proper divisors (825883126).

1018406804 is an frugal number, since it uses more digits than its factorization.

1018406804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5959 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 1018406804 is about 31912.4866470791. The cubic root of 1018406804 is about 1006.0983360325.

The spelling of 1018406804 in words is "one billion, eighteen million, four hundred six thousand, eight hundred four".