19090909090910 has 64 divisors (see below), whose sum is σ = 34944311362752. Its totient is φ = 7508540860416.

The previous prime is 19090909090871. The next prime is 19090909090931. The reversal of 19090909090910 is 1909090909091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109683272 + ... + 109857188.

It is an arithmetic number, because the mean of its divisors is an integer number (546004865043).

Almost surely, 2^{19090909090910} is an apocalyptic number.

19090909090910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19090909090910 is a deficient number, since it is larger than the sum of its proper divisors (15853402271842).

19090909090910 is a wasteful number, since it uses less digits than its factorization.

19090909090910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174797.

The product of its (nonzero) digits is 531441, while the sum is 56.

The spelling of 19090909090910 in words is "nineteen trillion, ninety billion, nine hundred nine million, ninety thousand, nine hundred ten".