16389897941 has 2 divisors, whose sum is σ = 16389897942. Its totient is φ = 16389897940.

The previous prime is 16389897919. The next prime is 16389897947. The reversal of 16389897941 is 14979898361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16330284100 + 59613841 = 127790^2 + 7721^2 .

It is a cyclic number.

It is not a de Polignac number, because 16389897941 - 2¹⁸ = 16389635797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16389897947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8194948970 + 8194948971.

It is an arithmetic number, because the mean of its divisors is an integer number (8194948971).

Almost surely, 2^16389897941 is an apocalyptic number.

It is an amenable number.

16389897941 is a deficient number, since it is larger than the sum of its proper divisors (1).

16389897941 is an equidigital number, since it uses as much as digits as its factorization.

16389897941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23514624, while the sum is 65.

The spelling of 16389897941 in words is "sixteen billion, three hundred eighty-nine million, eight hundred ninety-seven thousand, nine hundred forty-one".