19194039192 has 64 divisors (see below), whose sum is σ = 49770165600. Its totient is φ = 6163430400.

The previous prime is 19194039181. The next prime is 19194039287. The reversal of 19194039192 is 29193049191.

It is a happy number.

It is a super-2 number, since 2×19194039192² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17317 + ... + 196692.

Almost surely, 2^19194039192 is an apocalyptic number.

19194039192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19194039192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24885082800).

19194039192 is an abundant number, since it is smaller than the sum of its proper divisors (30576126408).

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

19194039192 is a wasteful number, since it uses less digits than its factorization.

19194039192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214156 (or 214152 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 48.

Subtracting 19194039192 from its reverse (29193049191), we obtain a palindrome (9999009999).

It can be divided in two parts, 191940 and 39192, that added together give a palindrome (231132).

The spelling of 19194039192 in words is "nineteen billion, one hundred ninety-four million, thirty-nine thousand, one hundred ninety-two".