16242649 has 2 divisors, whose sum is σ = 16242650. Its totient is φ = 16242648.

The previous prime is 16242619. The next prime is 16242671. The reversal of 16242649 is 94624261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13579225 + 2663424 = 3685^2 + 1632^2 .

It is a cyclic number.

It is not a de Polignac number, because 16242649 - 2⁹ = 16242137 is a prime.

It is not a weakly prime, because it can be changed into another prime (16242619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8121324 + 8121325.

It is an arithmetic number, because the mean of its divisors is an integer number (8121325).

Almost surely, 2^16242649 is an apocalyptic number.

It is an amenable number.

16242649 is a deficient number, since it is larger than the sum of its proper divisors (1).

16242649 is an equidigital number, since it uses as much as digits as its factorization.

16242649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 16242649 is about 4030.2169916768. The cubic root of 16242649 is about 253.2516516827.

The spelling of 16242649 in words is "sixteen million, two hundred forty-two thousand, six hundred forty-nine".