18860801 has 2 divisors, whose sum is σ = 18860802. Its totient is φ = 18860800.

The previous prime is 18860797. The next prime is 18860819. The reversal of 18860801 is 10806881.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15054400 + 3806401 = 3880^2 + 1951^2 .

It is an emirp because it is prime and its reverse (10806881) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 10809881 and 18890801.

It is a cyclic number.

It is not a de Polignac number, because 18860801 - 2² = 18860797 is a prime.

It is not a weakly prime, because it can be changed into another prime (18866801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9430400 + 9430401.

It is an arithmetic number, because the mean of its divisors is an integer number (9430401).

Almost surely, 2^18860801 is an apocalyptic number.

It is an amenable number.

18860801 is a deficient number, since it is larger than the sum of its proper divisors (1).

18860801 is an equidigital number, since it uses as much as digits as its factorization.

18860801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 18860801 is about 4342.9023705352. The cubic root of 18860801 is about 266.1869198942.

The spelling of 18860801 in words is "eighteen million, eight hundred sixty thousand, eight hundred one".