16289428949 has 2 divisors, whose sum is σ = 16289428950. Its totient is φ = 16289428948.

The previous prime is 16289428933. The next prime is 16289428957. The reversal of 16289428949 is 94982498261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16149834724 + 139594225 = 127082^2 + 11815^2 .

It is a cyclic number.

It is not a de Polignac number, because 16289428949 - 2⁴ = 16289428933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16289428891 and 16289428900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16289428979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8144714474 + 8144714475.

It is an arithmetic number, because the mean of its divisors is an integer number (8144714475).

Almost surely, 2^16289428949 is an apocalyptic number.

It is an amenable number.

16289428949 is a deficient number, since it is larger than the sum of its proper divisors (1).

16289428949 is an equidigital number, since it uses as much as digits as its factorization.

16289428949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17915904, while the sum is 62.

The spelling of 16289428949 in words is "sixteen billion, two hundred eighty-nine million, four hundred twenty-eight thousand, nine hundred forty-nine".