163021249 has 2 divisors, whose sum is σ = 163021250. Its totient is φ = 163021248.

The previous prime is 163021231. The next prime is 163021259. The reversal of 163021249 is 942120361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160275600 + 2745649 = 12660^2 + 1657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163021249 is a prime.

It is not a weakly prime, because it can be changed into another prime (163021259) 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, 81510624 + 81510625.

It is an arithmetic number, because the mean of its divisors is an integer number (81510625).

Almost surely, 2^163021249 is an apocalyptic number.

It is an amenable number.

163021249 is a deficient number, since it is larger than the sum of its proper divisors (1).

163021249 is an equidigital number, since it uses as much as digits as its factorization.

163021249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 163021249 is about 12767.9774827496. The cubic root of 163021249 is about 546.2792930790.

The spelling of 163021249 in words is "one hundred sixty-three million, twenty-one thousand, two hundred forty-nine".