1816634884 has 27 divisors (see below), whose sum is σ = 3226188693. Its totient is φ = 895062000.

The previous prime is 1816634881. The next prime is 1816634903. The reversal of 1816634884 is 4884366181.

The square root of 1816634884 is 42622.

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., 1745401284 + 71233600 = 41778^2 + 8440^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1816634881) by changing a digit.

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 in 8 ways as a sum of consecutive naturals, for example, 8609539 + ... + 8609749.

Almost surely, 2^1816634884 is an apocalyptic number.

1816634884 is the 42622-nd square number.

It is an amenable number.

1816634884 is a deficient number, since it is larger than the sum of its proper divisors (1409553809).

1816634884 is an equidigital number, since it uses as much as digits as its factorization.

1816634884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628 (or 314 counting only the distinct ones).

The product of its digits is 884736, while the sum is 49.

The cubic root of 1816634884 is about 1220.1762004757.

Multiplying 1816634884 by its sum of digits (49), we get a square (89015109316 = 298354²).

The spelling of 1816634884 in words is "one billion, eight hundred sixteen million, six hundred thirty-four thousand, eight hundred eighty-four".