18037601 has 2 divisors, whose sum is σ = 18037602. Its totient is φ = 18037600.

The previous prime is 18037577. The next prime is 18037603. The reversal of 18037601 is 10673081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17007376 + 1030225 = 4124^2 + 1015^2 .

It is a cyclic number.

It is not a de Polignac number, because 18037601 - 2¹⁴ = 18021217 is a prime.

Together with 18037603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18037603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9018800 + 9018801.

It is an arithmetic number, because the mean of its divisors is an integer number (9018801).

Almost surely, 2^18037601 is an apocalyptic number.

It is an amenable number.

18037601 is a deficient number, since it is larger than the sum of its proper divisors (1).

18037601 is an equidigital number, since it uses as much as digits as its factorization.

18037601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 18037601 is about 4247.0696956843. The cubic root of 18037601 is about 262.2564986062.

The spelling of 18037601 in words is "eighteen million, thirty-seven thousand, six hundred one".