19449091959 has 8 divisors (see below), whose sum is σ = 28289588352. Its totient is φ = 11787328440.

The previous prime is 19449091951. The next prime is 19449091969. The reversal of 19449091959 is 95919094491.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19449091959 - 2³ = 19449091951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19449091951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294683179 + ... + 294683244.

It is an arithmetic number, because the mean of its divisors is an integer number (3536198544).

Almost surely, 2^19449091959 is an apocalyptic number.

19449091959 is a deficient number, since it is larger than the sum of its proper divisors (8840496393).

19449091959 is a wasteful number, since it uses less digits than its factorization.

19449091959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589366437.

The product of its (nonzero) digits is 4723920, while the sum is 60.

The spelling of 19449091959 in words is "nineteen billion, four hundred forty-nine million, ninety-one thousand, nine hundred fifty-nine".