19105048605 has 16 divisors (see below), whose sum is σ = 31394242944. Its totient is φ = 9913970880.

The previous prime is 19105048603. The next prime is 19105048607. The reversal of 19105048605 is 50684050191.

It is an interprime number because it is at equal distance from previous prime (19105048603) and next prime (19105048607).

It is not a de Polignac number, because 19105048605 - 2¹ = 19105048603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19105048603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17211201 + ... + 17212310.

It is an arithmetic number, because the mean of its divisors is an integer number (1962140184).

Almost surely, 2^19105048605 is an apocalyptic number.

19105048605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19105048605 is a deficient number, since it is larger than the sum of its proper divisors (12289194339).

19105048605 is a wasteful number, since it uses less digits than its factorization.

19105048605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34423556.

The product of its (nonzero) digits is 43200, while the sum is 39.

Adding to 19105048605 its reverse (50684050191), we get a palindrome (69789098796).

The spelling of 19105048605 in words is "nineteen billion, one hundred five million, forty-eight thousand, six hundred five".