1818733968 has 30 divisors (see below), whose sum is σ = 5089929494. Its totient is φ = 606244608.

The previous prime is 1818733937. The next prime is 1818733991. The reversal of 1818733968 is 8693378181.

1818733968 is a `hidden beast` number, since 181 + 8 + 73 + 396 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1752929424 + 65804544 = 41868^2 + 8112^2 .

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, 6314905 + ... + 6315192.

Almost surely, 2^1818733968 is an apocalyptic number.

1818733968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1818733968 is an abundant number, since it is smaller than the sum of its proper divisors (3271195526).

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

1818733968 is a wasteful number, since it uses less digits than its factorization.

1818733968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12630111 (or 12630102 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 1818733968 is about 42646.6173101689. The cubic root of 1818733968 is about 1220.6459823608.

The spelling of 1818733968 in words is "one billion, eight hundred eighteen million, seven hundred thirty-three thousand, nine hundred sixty-eight".