19369541405 has 4 divisors (see below), whose sum is σ = 23243449692. Its totient is φ = 15495633120.

The previous prime is 19369541377. The next prime is 19369541417. The reversal of 19369541405 is 50414596391.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6923238436 + 12446302969 = 83206^2 + 111563^2 .

It is a de Polignac number, because none of the positive numbers 2^k-19369541405 is a prime.

It is a super-3 number, since 3×19369541405³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19369541405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936954136 + ... + 1936954145.

It is an arithmetic number, because the mean of its divisors is an integer number (5810862423).

Almost surely, 2^19369541405 is an apocalyptic number.

It is an amenable number.

19369541405 is a deficient number, since it is larger than the sum of its proper divisors (3873908287).

19369541405 is an equidigital number, since it uses as much as digits as its factorization.

19369541405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873908286.

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 19369541405 in words is "nineteen billion, three hundred sixty-nine million, five hundred forty-one thousand, four hundred five".