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18065401 is a prime number
BaseRepresentation
bin100010011101…
…0011111111001
31020222211001221
41010322133321
514111043101
61443112041
7306360544
oct104723771
936884057
1018065401
11a219892
126072621
1339869b3
14258385b
1518bcaa1
hex113a7f9

18065401 has 2 divisors, whose sum is σ = 18065402. Its totient is φ = 18065400.

The previous prime is 18065393. The next prime is 18065417. The reversal of 18065401 is 10456081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15093225 + 2972176 = 3885^2 + 1724^2 .

It is a cyclic number.

It is not a de Polignac number, because 18065401 - 23 = 18065393 is a prime.

It is not a weakly prime, because it can be changed into another prime (18005401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032700 + 9032701.

It is an arithmetic number, because the mean of its divisors is an integer number (9032701).

Almost surely, 218065401 is an apocalyptic number.

It is an amenable number.

18065401 is a deficient number, since it is larger than the sum of its proper divisors (1).

18065401 is an equidigital number, since it uses as much as digits as its factorization.

18065401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 18065401 is about 4250.3412804150. The cubic root of 18065401 is about 262.3911615309.

The spelling of 18065401 in words is "eighteen million, sixty-five thousand, four hundred one".