18290401 has 2 divisors, whose sum is σ = 18290402. Its totient is φ = 18290400.

The previous prime is 18290383. The next prime is 18290411. The reversal of 18290401 is 10409281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17766225 + 524176 = 4215^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 18290401 - 2⁷ = 18290273 is a prime.

It is not a weakly prime, because it can be changed into another prime (18290411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9145200 + 9145201.

It is an arithmetic number, because the mean of its divisors is an integer number (9145201).

Almost surely, 2^18290401 is an apocalyptic number.

It is an amenable number.

18290401 is a deficient number, since it is larger than the sum of its proper divisors (1).

18290401 is an equidigital number, since it uses as much as digits as its factorization.

18290401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 18290401 is about 4276.7278379621. The cubic root of 18290401 is about 263.4760086032.

Adding to 18290401 its reverse (10409281), we get a palindrome (28699682).

The spelling of 18290401 in words is "eighteen million, two hundred ninety thousand, four hundred one".