19079475887 has 16 divisors (see below), whose sum is σ = 20475095040. Its totient is φ = 17714616192.

The previous prime is 19079475881. The next prime is 19079475931. The reversal of 19079475887 is 78857497091.

It is not a de Polignac number, because 19079475887 - 2⁴ = 19079475871 is a prime.

It is a super-2 number, since 2×19079475887² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19079475881) 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, 1744478 + ... + 1755380.

It is an arithmetic number, because the mean of its divisors is an integer number (1279693440).

Almost surely, 2^19079475887 is an apocalyptic number.

19079475887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

19079475887 is a deficient number, since it is larger than the sum of its proper divisors (1395619153).

19079475887 is a wasteful number, since it uses less digits than its factorization.

19079475887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12302.

The product of its (nonzero) digits is 35562240, while the sum is 65.

The spelling of 19079475887 in words is "nineteen billion, seventy-nine million, four hundred seventy-five thousand, eight hundred eighty-seven".