33981733 has 2 divisors, whose sum is σ = 33981734. Its totient is φ = 33981732.

The previous prime is 33981721. The next prime is 33981749. The reversal of 33981733 is 33718933.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26040609 + 7941124 = 5103^2 + 2818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33981733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33981692 and 33981701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33981433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16990866 + 16990867.

It is an arithmetic number, because the mean of its divisors is an integer number (16990867).

Almost surely, 2^33981733 is an apocalyptic number.

It is an amenable number.

33981733 is a deficient number, since it is larger than the sum of its proper divisors (1).

33981733 is an equidigital number, since it uses as much as digits as its factorization.

33981733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 37.

The square root of 33981733 is about 5829.3853020709. The cubic root of 33981733 is about 323.9031520983.

The spelling of 33981733 in words is "thirty-three million, nine hundred eighty-one thousand, seven hundred thirty-three".