19924375541 has 6 divisors (see below), whose sum is σ = 23177334870. Its totient is φ = 17078036136.

The previous prime is 19924375507. The next prime is 19924375543. The reversal of 19924375541 is 14557342991.

It can be written as a sum of positive squares in only one way, i.e., 16764811441 + 3159564100 = 129479^2 + 56210^2 .

It is not a de Polignac number, because 19924375541 - 2⁶ = 19924375477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19924375541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19924375543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203309906 + ... + 203310003.

It is an arithmetic number, because the mean of its divisors is an integer number (3862889145).

Almost surely, 2^19924375541 is an apocalyptic number.

It is an amenable number.

19924375541 is a deficient number, since it is larger than the sum of its proper divisors (3252959329).

19924375541 is an equidigital number, since it uses as much as digits as its factorization.

19924375541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406619923 (or 406619916 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 50.

The spelling of 19924375541 in words is "nineteen billion, nine hundred twenty-four million, three hundred seventy-five thousand, five hundred forty-one".