19191101010 has 16 divisors (see below), whose sum is σ = 46058642496. Its totient is φ = 5117626928.

The previous prime is 19191100979. The next prime is 19191101051. The reversal of 19191101010 is 1010119191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319851654 + ... + 319851713.

It is an arithmetic number, because the mean of its divisors is an integer number (2878665156).

Almost surely, 2^19191101010 is an apocalyptic number.

19191101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19191101010 is an abundant number, since it is smaller than the sum of its proper divisors (26867541486).

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

19191101010 is a wasteful number, since it uses less digits than its factorization.

19191101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639703377.

The product of its (nonzero) digits is 81, while the sum is 24.

The spelling of 19191101010 in words is "nineteen billion, one hundred ninety-one million, one hundred one thousand, ten".