163487395249 has 2 divisors, whose sum is σ = 163487395250. Its totient is φ = 163487395248.

The previous prime is 163487395151. The next prime is 163487395271. The reversal of 163487395249 is 942593784361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159525951649 + 3961443600 = 399407^2 + 62940^2 .

It is a cyclic number.

It is not a de Polignac number, because 163487395249 - 2²³ = 163479006641 is a prime.

It is not a weakly prime, because it can be changed into another prime (163487395289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81743697624 + 81743697625.

It is an arithmetic number, because the mean of its divisors is an integer number (81743697625).

Almost surely, 2^163487395249 is an apocalyptic number.

It is an amenable number.

163487395249 is a deficient number, since it is larger than the sum of its proper divisors (1).

163487395249 is an equidigital number, since it uses as much as digits as its factorization.

163487395249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 61.

The spelling of 163487395249 in words is "one hundred sixty-three billion, four hundred eighty-seven million, three hundred ninety-five thousand, two hundred forty-nine".