19158719118 has 32 divisors (see below), whose sum is σ = 47772391680. Its totient is φ = 4976290560.

The previous prime is 19158719117. The next prime is 19158719119. The reversal of 19158719118 is 81191785191.

It is an interprime number because it is at equal distance from previous prime (19158719117) and next prime (19158719119).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19158719117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20734083 + ... + 20735006.

It is an arithmetic number, because the mean of its divisors is an integer number (1492887240).

Almost surely, 2^19158719118 is an apocalyptic number.

19158719118 is an abundant number, since it is smaller than the sum of its proper divisors (28613672562).

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

19158719118 is a wasteful number, since it uses less digits than its factorization.

19158719118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41469112.

The product of its digits is 181440, while the sum is 51.

The spelling of 19158719118 in words is "nineteen billion, one hundred fifty-eight million, seven hundred nineteen thousand, one hundred eighteen".