11818001 has 6 divisors (see below), whose sum is σ = 12797190. Its totient is φ = 10908768.

The previous prime is 11817997. The next prime is 11818007. The reversal of 11818001 is 10081811.

It can be written as a sum of positive squares in 3 ways, for example, as 1157776 + 10660225 = 1076^2 + 3265^2 .

It is not a de Polignac number, because 11818001 - 2² = 11817997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11818007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34796 + ... + 35133.

It is an arithmetic number, because the mean of its divisors is an integer number (2132865).

Almost surely, 2^11818001 is an apocalyptic number.

It is an amenable number.

11818001 is a deficient number, since it is larger than the sum of its proper divisors (979189).

11818001 is an equidigital number, since it uses as much as digits as its factorization.

11818001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69955 (or 69942 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

The square root of 11818001 is about 3437.7319558104. The cubic root of 11818001 is about 227.7795203692.

Adding to 11818001 its reverse (10081811), we get a palindrome (21899812).

The spelling of 11818001 in words is "eleven million, eight hundred eighteen thousand, one".