19170409542 has 32 divisors (see below), whose sum is σ = 38745412992. Its totient is φ = 6322847424.

The previous prime is 19170409523. The next prime is 19170409637. The reversal of 19170409542 is 24590407191.

It is a junction number, because it is equal to n+sod(n) for n = 19170409494 and 19170409503.

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 15 ways as a sum of consecutive naturals, for example, 532773 + ... + 567615.

It is an arithmetic number, because the mean of its divisors is an integer number (1210794156).

Almost surely, 2^19170409542 is an apocalyptic number.

19170409542 is an abundant number, since it is smaller than the sum of its proper divisors (19575003450).

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

19170409542 is a wasteful number, since it uses less digits than its factorization.

19170409542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35812.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 19170409542 in words is "nineteen billion, one hundred seventy million, four hundred nine thousand, five hundred forty-two".