16500441389 has 2 divisors, whose sum is σ = 16500441390. Its totient is φ = 16500441388.

The previous prime is 16500441337. The next prime is 16500441401. The reversal of 16500441389 is 98314400561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14961448489 + 1538992900 = 122317^2 + 39230^2 .

It is a cyclic number.

It is not a de Polignac number, because 16500441389 - 2¹² = 16500437293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16500441289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250220694 + 8250220695.

It is an arithmetic number, because the mean of its divisors is an integer number (8250220695).

Almost surely, 2^16500441389 is an apocalyptic number.

It is an amenable number.

16500441389 is a deficient number, since it is larger than the sum of its proper divisors (1).

16500441389 is an equidigital number, since it uses as much as digits as its factorization.

16500441389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 16500441389 in words is "sixteen billion, five hundred million, four hundred forty-one thousand, three hundred eighty-nine".