19049509285 has 8 divisors (see below), whose sum is σ = 22871409696. Its totient is φ = 15231608400.

The previous prime is 19049509277. The next prime is 19049509289. The reversal of 19049509285 is 58290594091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19049509285 - 2³ = 19049509277 is a prime.

It is a super-2 number, since 2×19049509285² (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 (19049509289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989391 + ... + 1008460.

It is an arithmetic number, because the mean of its divisors is an integer number (2858926212).

Almost surely, 2^19049509285 is an apocalyptic number.

It is an amenable number.

19049509285 is a deficient number, since it is larger than the sum of its proper divisors (3821900411).

19049509285 is a wasteful number, since it uses less digits than its factorization.

19049509285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999763.

The product of its (nonzero) digits is 1166400, while the sum is 52.

The spelling of 19049509285 in words is "nineteen billion, forty-nine million, five hundred nine thousand, two hundred eighty-five".