16219933 has 2 divisors, whose sum is σ = 16219934. Its totient is φ = 16219932.

The previous prime is 16219927. The next prime is 16219981. The reversal of 16219933 is 33991261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15856324 + 363609 = 3982^2 + 603^2 .

It is an emirp because it is prime and its reverse (33991261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16219933 - 2⁹ = 16219421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16219433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8109966 + 8109967.

It is an arithmetic number, because the mean of its divisors is an integer number (8109967).

Almost surely, 2^16219933 is an apocalyptic number.

It is an amenable number.

16219933 is a deficient number, since it is larger than the sum of its proper divisors (1).

16219933 is an equidigital number, since it uses as much as digits as its factorization.

16219933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 34.

The square root of 16219933 is about 4027.3977951029. The cubic root of 16219933 is about 253.1335357179.

The spelling of 16219933 in words is "sixteen million, two hundred nineteen thousand, nine hundred thirty-three".