18077233 has 2 divisors, whose sum is σ = 18077234. Its totient is φ = 18077232.

The previous prime is 18077231. The next prime is 18077291. The reversal of 18077233 is 33277081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16459249 + 1617984 = 4057^2 + 1272^2 .

It is a cyclic number.

It is not a de Polignac number, because 18077233 - 2¹ = 18077231 is a prime.

Together with 18077231, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 18077195 and 18077204.

It is not a weakly prime, because it can be changed into another prime (18077231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9038616 + 9038617.

It is an arithmetic number, because the mean of its divisors is an integer number (9038617).

Almost surely, 2^18077233 is an apocalyptic number.

It is an amenable number.

18077233 is a deficient number, since it is larger than the sum of its proper divisors (1).

18077233 is an equidigital number, since it uses as much as digits as its factorization.

18077233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 18077233 is about 4251.7329408137. The cubic root of 18077233 is about 262.4484337106.

The spelling of 18077233 in words is "eighteen million, seventy-seven thousand, two hundred thirty-three".