18710401 has 2 divisors, whose sum is σ = 18710402. Its totient is φ = 18710400.

The previous prime is 18710399. The next prime is 18710407. The reversal of 18710401 is 10401781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17007376 + 1703025 = 4124^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 18710401 - 2¹ = 18710399 is a prime.

Together with 18710399, 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 (18710407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9355200 + 9355201.

It is an arithmetic number, because the mean of its divisors is an integer number (9355201).

Almost surely, 2^18710401 is an apocalyptic number.

It is an amenable number.

18710401 is a deficient number, since it is larger than the sum of its proper divisors (1).

18710401 is an equidigital number, since it uses as much as digits as its factorization.

18710401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 18710401 is about 4325.5521034892. The cubic root of 18710401 is about 265.4774872947.

The spelling of 18710401 in words is "eighteen million, seven hundred ten thousand, four hundred one".