97819133 has 2 divisors, whose sum is σ = 97819134. Its totient is φ = 97819132.

The previous prime is 97819123. The next prime is 97819147. The reversal of 97819133 is 33191879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84143929 + 13675204 = 9173^2 + 3698^2 .

It is a cyclic number.

It is not a de Polignac number, because 97819133 - 2¹⁰ = 97818109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97819123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48909566 + 48909567.

It is an arithmetic number, because the mean of its divisors is an integer number (48909567).

Almost surely, 2^97819133 is an apocalyptic number.

It is an amenable number.

97819133 is a deficient number, since it is larger than the sum of its proper divisors (1).

97819133 is an equidigital number, since it uses as much as digits as its factorization.

97819133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 41.

The square root of 97819133 is about 9890.3555547816. The cubic root of 97819133 is about 460.7598233206.

The spelling of 97819133 in words is "ninety-seven million, eight hundred nineteen thousand, one hundred thirty-three".