16641019 has 2 divisors, whose sum is σ = 16641020. Its totient is φ = 16641018.

The previous prime is 16640999. The next prime is 16641047. The reversal of 16641019 is 91014661.

It is an a-pointer prime, because the next prime (16641047) can be obtained adding 16641019 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (91014661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16641019 - 2¹³ = 16632827 is a prime.

It is a super-2 number, since 2×16641019² = 553847026716722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16641059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8320509 + 8320510.

It is an arithmetic number, because the mean of its divisors is an integer number (8320510).

Almost surely, 2^16641019 is an apocalyptic number.

16641019 is a deficient number, since it is larger than the sum of its proper divisors (1).

16641019 is an equidigital number, since it uses as much as digits as its factorization.

16641019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 16641019 is about 4079.3405104257. The cubic root of 16641019 is about 255.3053832037.

The spelling of 16641019 in words is "sixteen million, six hundred forty-one thousand, nineteen".