163023901 has 2 divisors, whose sum is σ = 163023902. Its totient is φ = 163023900.

The previous prime is 163023893. The next prime is 163023911. The reversal of 163023901 is 109320361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139004100 + 24019801 = 11790^2 + 4901^2 .

It is an emirp because it is prime and its reverse (109320361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163023901 - 2³ = 163023893 is a prime.

It is equal to p_9134413 and since 163023901 and 9134413 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163023911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81511950 + 81511951.

It is an arithmetic number, because the mean of its divisors is an integer number (81511951).

Almost surely, 2^163023901 is an apocalyptic number.

It is an amenable number.

163023901 is a deficient number, since it is larger than the sum of its proper divisors (1).

163023901 is an equidigital number, since it uses as much as digits as its factorization.

163023901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 163023901 is about 12768.0813358938. The cubic root of 163023901 is about 546.2822553203.

The spelling of 163023901 in words is "one hundred sixty-three million, twenty-three thousand, nine hundred one".