19008735018540 has 48 divisors (see below), whose sum is σ = 53332858252800. Its totient is φ = 5058672176320.

The previous prime is 19008735018517. The next prime is 19008735018601. The reversal of 19008735018540 is 4581053780091.

It is a super-2 number, since 2×19008735018540² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322589940 + ... + 322648859.

It is an arithmetic number, because the mean of its divisors is an integer number (1111101213600).

Almost surely, 2^{19008735018540} is an apocalyptic number.

19008735018540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19008735018540 is an abundant number, since it is smaller than the sum of its proper divisors (34324123234260).

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

19008735018540 is a wasteful number, since it uses less digits than its factorization.

19008735018540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645239302 (or 645239300 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 19008735018540 in words is "nineteen trillion, eight billion, seven hundred thirty-five million, eighteen thousand, five hundred forty".