16633481 has 2 divisors, whose sum is σ = 16633482. Its totient is φ = 16633480.

The previous prime is 16633469. The next prime is 16633511. The reversal of 16633481 is 18433661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9120400 + 7513081 = 3020^2 + 2741^2 .

It is a cyclic number.

It is not a de Polignac number, because 16633481 - 2¹⁸ = 16371337 is a prime.

It is a super-2 number, since 2×16633481² = 553345380354722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16633411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8316740 + 8316741.

It is an arithmetic number, because the mean of its divisors is an integer number (8316741).

Almost surely, 2^16633481 is an apocalyptic number.

It is an amenable number.

16633481 is a deficient number, since it is larger than the sum of its proper divisors (1).

16633481 is an equidigital number, since it uses as much as digits as its factorization.

16633481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 16633481 is about 4078.4164819204. The cubic root of 16633481 is about 255.2668282203.

The spelling of 16633481 in words is "sixteen million, six hundred thirty-three thousand, four hundred eighty-one".