33378113 has 2 divisors, whose sum is σ = 33378114. Its totient is φ = 33378112.

The previous prime is 33378061. The next prime is 33378139. The reversal of 33378113 is 31187333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23348224 + 10029889 = 4832^2 + 3167^2 .

It is a cyclic number.

It is not a de Polignac number, because 33378113 - 2⁸ = 33377857 is a prime.

It is a super-2 number, since 2×33378113² = 2228196854881538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33378713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16689056 + 16689057.

It is an arithmetic number, because the mean of its divisors is an integer number (16689057).

Almost surely, 2^33378113 is an apocalyptic number.

It is an amenable number.

33378113 is a deficient number, since it is larger than the sum of its proper divisors (1).

33378113 is an equidigital number, since it uses as much as digits as its factorization.

33378113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

The square root of 33378113 is about 5777.3794232333. The cubic root of 33378113 is about 321.9738446921.

The spelling of 33378113 in words is "thirty-three million, three hundred seventy-eight thousand, one hundred thirteen".