19018272080 has 20 divisors (see below), whose sum is σ = 44217482772. Its totient is φ = 7607308800.

The previous prime is 19018272029. The next prime is 19018272121. The reversal of 19018272080 is 8027281091.

It can be written as a sum of positive squares in 2 ways, for example, as 5392846096 + 13625425984 = 73436^2 + 116728^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118864121 + ... + 118864280.

Almost surely, 2^19018272080 is an apocalyptic number.

19018272080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19018272080 is an abundant number, since it is smaller than the sum of its proper divisors (25199210692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19018272080 is a wasteful number, since it uses less digits than its factorization.

19018272080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237728414 (or 237728408 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

It can be divided in two parts, 190182 and 72080, that added together give a palindrome (262262).

The spelling of 19018272080 in words is "nineteen billion, eighteen million, two hundred seventy-two thousand, eighty".