18352001 has 2 divisors, whose sum is σ = 18352002. Its totient is φ = 18352000.

The previous prime is 18351989. The next prime is 18352021. The reversal of 18352001 is 10025381.

It is an a-pointer prime, because the next prime (18352021) can be obtained adding 18352001 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10080625 + 8271376 = 3175^2 + 2876^2 .

It is an emirp because it is prime and its reverse (10025381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18352001 - 2²² = 14157697 is a prime.

It is not a weakly prime, because it can be changed into another prime (18352021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9176000 + 9176001.

It is an arithmetic number, because the mean of its divisors is an integer number (9176001).

Almost surely, 2^18352001 is an apocalyptic number.

It is an amenable number.

18352001 is a deficient number, since it is larger than the sum of its proper divisors (1).

18352001 is an equidigital number, since it uses as much as digits as its factorization.

18352001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 18352001 is about 4283.9235520723. The cubic root of 18352001 is about 263.7714629554.

Adding to 18352001 its reverse (10025381), we get a palindrome (28377382).

The spelling of 18352001 in words is "eighteen million, three hundred fifty-two thousand, one".