16229009989 has 2 divisors, whose sum is σ = 16229009990. Its totient is φ = 16229009988.

The previous prime is 16229009983. The next prime is 16229010001. The reversal of 16229009989 is 98990092261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14121281889 + 2107728100 = 118833^2 + 45910^2 .

It is a cyclic number.

It is not a de Polignac number, because 16229009989 - 2⁹ = 16229009477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16229009983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8114504994 + 8114504995.

It is an arithmetic number, because the mean of its divisors is an integer number (8114504995).

Almost surely, 2^16229009989 is an apocalyptic number.

It is an amenable number.

16229009989 is a deficient number, since it is larger than the sum of its proper divisors (1).

16229009989 is an equidigital number, since it uses as much as digits as its factorization.

16229009989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The spelling of 16229009989 in words is "sixteen billion, two hundred twenty-nine million, nine thousand, nine hundred eighty-nine".