19118117210 has 16 divisors (see below), whose sum is σ = 36436882536. Its totient is φ = 7197408768.

The previous prime is 19118117203. The next prime is 19118117219. The reversal of 19118117210 is 1271181191.

It can be written as a sum of positive squares in 4 ways, for example, as 18666937129 + 451180081 = 136627^2 + 21241^2 .

It is not an unprimeable number, because it can be changed into a prime (19118117219) by changing a digit.

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, 56229587 + ... + 56229926.

Almost surely, 2^19118117210 is an apocalyptic number.

19118117210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19118117210 is a deficient number, since it is larger than the sum of its proper divisors (17318765326).

19118117210 is a wasteful number, since it uses less digits than its factorization.

19118117210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112459537.

The product of its (nonzero) digits is 1008, while the sum is 32.

The spelling of 19118117210 in words is "nineteen billion, one hundred eighteen million, one hundred seventeen thousand, two hundred ten".