19208539190 has 16 divisors (see below), whose sum is σ = 36609216192. Its totient is φ = 7231449984.

The previous prime is 19208539157. The next prime is 19208539201. The reversal of 19208539190 is 9193580291.

It is a super-2 number, since 2×19208539190² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 56495534 + ... + 56495873.

It is an arithmetic number, because the mean of its divisors is an integer number (2288076012).

Almost surely, 2^19208539190 is an apocalyptic number.

19208539190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19208539190 is a deficient number, since it is larger than the sum of its proper divisors (17400677002).

19208539190 is a wasteful number, since it uses less digits than its factorization.

19208539190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112991431.

The product of its (nonzero) digits is 174960, while the sum is 47.

The spelling of 19208539190 in words is "nineteen billion, two hundred eight million, five hundred thirty-nine thousand, one hundred ninety".