163457149 has 2 divisors, whose sum is σ = 163457150. Its totient is φ = 163457148.

The previous prime is 163457143. The next prime is 163457191. The reversal of 163457149 is 941754361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136469124 + 26988025 = 11682^2 + 5195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163457149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163457143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81728574 + 81728575.

It is an arithmetic number, because the mean of its divisors is an integer number (81728575).

Almost surely, 2^163457149 is an apocalyptic number.

It is an amenable number.

163457149 is a deficient number, since it is larger than the sum of its proper divisors (1).

163457149 is an equidigital number, since it uses as much as digits as its factorization.

163457149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 163457149 is about 12785.0361360459. The cubic root of 163457149 is about 546.7657556764.

The spelling of 163457149 in words is "one hundred sixty-three million, four hundred fifty-seven thousand, one hundred forty-nine".