16002643 has 2 divisors, whose sum is σ = 16002644. Its totient is φ = 16002642.

The previous prime is 16002601. The next prime is 16002647. The reversal of 16002643 is 34620061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16002643 - 2²¹ = 13905491 is a prime.

It is equal to p_1031278 and since 16002643 and 1031278 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (16002647) 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, 8001321 + 8001322.

It is an arithmetic number, because the mean of its divisors is an integer number (8001322).

Almost surely, 2^16002643 is an apocalyptic number.

16002643 is a deficient number, since it is larger than the sum of its proper divisors (1).

16002643 is an equidigital number, since it uses as much as digits as its factorization.

16002643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 16002643 is about 4000.3303613577. The cubic root of 16002643 is about 251.9980840956.

The spelling of 16002643 in words is "sixteen million, two thousand, six hundred forty-three".