8191952190 has 96 divisors (see below), whose sum is σ = 22073575680. Its totient is φ = 2105359872.

The previous prime is 8191952149. The next prime is 8191952203. The reversal of 8191952190 is 912591918.

It is a super-2 number, since 2×8191952190² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1607827 + ... + 1612913.

It is an arithmetic number, because the mean of its divisors is an integer number (229933080).

Almost surely, 2^8191952190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8191952190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11036787840).

8191952190 is an abundant number, since it is smaller than the sum of its proper divisors (13881623490).

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

8191952190 is a wasteful number, since it uses less digits than its factorization.

8191952190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5746 (or 5743 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 45.

The square root of 8191952190 is about 90509.4038760614. The cubic root of 8191952190 is about 2015.8697581558.

The spelling of 8191952190 in words is "eight billion, one hundred ninety-one million, nine hundred fifty-two thousand, one hundred ninety".