1818382001 has 12 divisors (see below), whose sum is σ = 1929148416. Its totient is φ = 1710727920.

The previous prime is 1818381997. The next prime is 1818382091. The reversal of 1818382001 is 1002838181.

It is a happy number.

It is not a de Polignac number, because 1818382001 - 2² = 1818381997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818382091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74960 + ... + 96206.

It is an arithmetic number, because the mean of its divisors is an integer number (160762368).

Almost surely, 2^1818382001 is an apocalyptic number.

It is an amenable number.

1818382001 is a deficient number, since it is larger than the sum of its proper divisors (110766415).

1818382001 is an equidigital number, since it uses as much as digits as its factorization.

1818382001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21392 (or 21331 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 1818382001 is about 42642.4905581276. The cubic root of 1818382001 is about 1220.5672362239.

The spelling of 1818382001 in words is "one billion, eight hundred eighteen million, three hundred eighty-two thousand, one".