16919229541 has 2 divisors, whose sum is σ = 16919229542. Its totient is φ = 16919229540.

The previous prime is 16919229521. The next prime is 16919229589. The reversal of 16919229541 is 14592291961.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15632500900 + 1286728641 = 125030^2 + 35871^2 .

It is a cyclic number.

It is not a de Polignac number, because 16919229541 - 2⁹ = 16919229029 is a prime.

It is a super-2 number, since 2×16919229541² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16919229511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8459614770 + 8459614771.

It is an arithmetic number, because the mean of its divisors is an integer number (8459614771).

Almost surely, 2^16919229541 is an apocalyptic number.

It is an amenable number.

16919229541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16919229541 is an equidigital number, since it uses as much as digits as its factorization.

16919229541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 49.

The spelling of 16919229541 in words is "sixteen billion, nine hundred nineteen million, two hundred twenty-nine thousand, five hundred forty-one".