1918264804 has 27 divisors (see below), whose sum is σ = 3422430921. Its totient is φ = 940781040.

The previous prime is 1918264801. The next prime is 1918264813. The reversal of 1918264804 is 4084628191.

The square root of 1918264804 is 43798.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 62378404 + 1855886400 = 7898^2 + 43080^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1918264801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5343177 + ... + 5343535.

Almost surely, 2^1918264804 is an apocalyptic number.

1918264804 is the 43798-th square number.

It is an amenable number.

1918264804 is a deficient number, since it is larger than the sum of its proper divisors (1504166117).

1918264804 is an frugal number, since it uses more digits than its factorization.

1918264804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The cubic root of 1918264804 is about 1242.5184688771.

The spelling of 1918264804 in words is "one billion, nine hundred eighteen million, two hundred sixty-four thousand, eight hundred four".