19261056893 has 16 divisors (see below), whose sum is σ = 20829754176. Its totient is φ = 17704915200.

The previous prime is 19261056847. The next prime is 19261056929. The reversal of 19261056893 is 39865016291.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19261056893 - 2²² = 19256862589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19261052893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6875093 + ... + 6877893.

It is an arithmetic number, because the mean of its divisors is an integer number (1301859636).

Almost surely, 2^19261056893 is an apocalyptic number.

19261056893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19261056893 is a deficient number, since it is larger than the sum of its proper divisors (1568697283).

19261056893 is a wasteful number, since it uses less digits than its factorization.

19261056893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 19261056893 in words is "nineteen billion, two hundred sixty-one million, fifty-six thousand, eight hundred ninety-three".