163840207 has 2 divisors, whose sum is σ = 163840208. Its totient is φ = 163840206.

The previous prime is 163840199. The next prime is 163840213. The reversal of 163840207 is 702048361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163840207 - 2³ = 163840199 is a prime.

It is a super-2 number, since 2×163840207² = 53687226859605698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163840267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81920103 + 81920104.

It is an arithmetic number, because the mean of its divisors is an integer number (81920104).

Almost surely, 2^163840207 is an apocalyptic number.

163840207 is a deficient number, since it is larger than the sum of its proper divisors (1).

163840207 is an equidigital number, since it uses as much as digits as its factorization.

163840207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 163840207 is about 12800.0080859349. The cubic root of 163840207 is about 547.1925333824.

Adding to 163840207 its reverse (702048361), we get a palindrome (865888568).

The spelling of 163840207 in words is "one hundred sixty-three million, eight hundred forty thousand, two hundred seven".