18249433 has 2 divisors, whose sum is σ = 18249434. Its totient is φ = 18249432.

The previous prime is 18249403. The next prime is 18249463. The reversal of 18249433 is 33494281.

It is a balanced prime because it is at equal distance from previous prime (18249403) and next prime (18249463).

It can be written as a sum of positive squares in only one way, i.e., 12475024 + 5774409 = 3532^2 + 2403^2 .

It is a cyclic number.

It is not a de Polignac number, because 18249433 - 2⁵ = 18249401 is a prime.

It is not a weakly prime, because it can be changed into another prime (18249403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9124716 + 9124717.

It is an arithmetic number, because the mean of its divisors is an integer number (9124717).

Almost surely, 2^18249433 is an apocalyptic number.

It is an amenable number.

18249433 is a deficient number, since it is larger than the sum of its proper divisors (1).

18249433 is an equidigital number, since it uses as much as digits as its factorization.

18249433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 18249433 is about 4271.9355098129. The cubic root of 18249433 is about 263.2791447900.

The spelling of 18249433 in words is "eighteen million, two hundred forty-nine thousand, four hundred thirty-three".