19170409540 has 48 divisors (see below), whose sum is σ = 40938307200. Its totient is φ = 7539521792.

The previous prime is 19170409523. The next prime is 19170409637. The reversal of 19170409540 is 4590407191.

It is a junction number, because it is equal to n+sod(n) for n = 19170409493 and 19170409502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288537 + ... + 348703.

It is an arithmetic number, because the mean of its divisors is an integer number (852881400).

Almost surely, 2^19170409540 is an apocalyptic number.

19170409540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19170409540 is an abundant number, since it is smaller than the sum of its proper divisors (21767897660).

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

19170409540 is a wasteful number, since it uses less digits than its factorization.

19170409540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60444 (or 60442 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 19170409540 in words is "nineteen billion, one hundred seventy million, four hundred nine thousand, five hundred forty".