33018397 has 2 divisors, whose sum is σ = 33018398. Its totient is φ = 33018396.

The previous prime is 33018383. The next prime is 33018413. The reversal of 33018397 is 79381033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27311076 + 5707321 = 5226^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 33018397 - 2¹⁹ = 32494109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33018497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16509198 + 16509199.

It is an arithmetic number, because the mean of its divisors is an integer number (16509199).

Almost surely, 2^33018397 is an apocalyptic number.

It is an amenable number.

33018397 is a deficient number, since it is larger than the sum of its proper divisors (1).

33018397 is an equidigital number, since it uses as much as digits as its factorization.

33018397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 33018397 is about 5746.1636767499. The cubic root of 33018397 is about 320.8130269864.

The spelling of 33018397 in words is "thirty-three million, eighteen thousand, three hundred ninety-seven".