16342649 has 2 divisors, whose sum is σ = 16342650. Its totient is φ = 16342648.

The previous prime is 16342637. The next prime is 16342663. The reversal of 16342649 is 94624361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15405625 + 937024 = 3925^2 + 968^2 .

It is a cyclic number.

It is not a de Polignac number, because 16342649 - 2⁴ = 16342633 is a prime.

It is not a weakly prime, because it can be changed into another prime (16342619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8171324 + 8171325.

It is an arithmetic number, because the mean of its divisors is an integer number (8171325).

Almost surely, 2^16342649 is an apocalyptic number.

It is an amenable number.

16342649 is a deficient number, since it is larger than the sum of its proper divisors (1).

16342649 is an equidigital number, since it uses as much as digits as its factorization.

16342649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 16342649 is about 4042.6042348961. The cubic root of 16342649 is about 253.7703144049.

The spelling of 16342649 in words is "sixteen million, three hundred forty-two thousand, six hundred forty-nine".