33918149 has 2 divisors, whose sum is σ = 33918150. Its totient is φ = 33918148.

The previous prime is 33918121. The next prime is 33918151. The reversal of 33918149 is 94181933.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31561924 + 2356225 = 5618^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 33918149 - 2¹² = 33914053 is a prime.

Together with 33918151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33918649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16959074 + 16959075.

It is an arithmetic number, because the mean of its divisors is an integer number (16959075).

Almost surely, 2^33918149 is an apocalyptic number.

It is an amenable number.

33918149 is a deficient number, since it is larger than the sum of its proper divisors (1).

33918149 is an equidigital number, since it uses as much as digits as its factorization.

33918149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 33918149 is about 5823.9290002540. The cubic root of 33918149 is about 323.7010050930.

The spelling of 33918149 in words is "thirty-three million, nine hundred eighteen thousand, one hundred forty-nine".