19124359881 has 12 divisors (see below), whose sum is σ = 28027988016. Its totient is φ = 11590520920.

The previous prime is 19124359879. The next prime is 19124359939. The reversal of 19124359881 is 18895342191.

It is not a de Polignac number, because 19124359881 - 2¹ = 19124359879 is a prime.

It is a super-2 number, since 2×19124359881² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19124359871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26341731 + ... + 26342456.

It is an arithmetic number, because the mean of its divisors is an integer number (2335665668).

Almost surely, 2^19124359881 is an apocalyptic number.

19124359881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19124359881 is a deficient number, since it is larger than the sum of its proper divisors (8903628135).

19124359881 is a wasteful number, since it uses less digits than its factorization.

19124359881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52684212 (or 52684201 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The spelling of 19124359881 in words is "nineteen billion, one hundred twenty-four million, three hundred fifty-nine thousand, eight hundred eighty-one".