163333397 has 2 divisors, whose sum is σ = 163333398. Its totient is φ = 163333396.

The previous prime is 163333361. The next prime is 163333411. The reversal of 163333397 is 793333361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152744881 + 10588516 = 12359^2 + 3254^2 .

It is a cyclic number.

It is not a de Polignac number, because 163333397 - 2¹⁰ = 163332373 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163333397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163333997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81666698 + 81666699.

It is an arithmetic number, because the mean of its divisors is an integer number (81666699).

Almost surely, 2^163333397 is an apocalyptic number.

It is an amenable number.

163333397 is a deficient number, since it is larger than the sum of its proper divisors (1).

163333397 is an equidigital number, since it uses as much as digits as its factorization.

163333397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 38.

The square root of 163333397 is about 12780.1954992872. The cubic root of 163333397 is about 546.6277369578.

The spelling of 163333397 in words is "one hundred sixty-three million, three hundred thirty-three thousand, three hundred ninety-seven".