19182166368 has 24 divisors (see below), whose sum is σ = 50353186968. Its totient is φ = 6394055424.

The previous prime is 19182166361. The next prime is 19182166429. The reversal of 19182166368 is 86366128191.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×19182166368² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19182166368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19182166361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99907021 + ... + 99907212.

It is an arithmetic number, because the mean of its divisors is an integer number (2098049457).

Almost surely, 2^19182166368 is an apocalyptic number.

It is an amenable number.

19182166368 is an abundant number, since it is smaller than the sum of its proper divisors (31171020600).

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

19182166368 is a wasteful number, since it uses less digits than its factorization.

19182166368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199814246 (or 199814238 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The spelling of 19182166368 in words is "nineteen billion, one hundred eighty-two million, one hundred sixty-six thousand, three hundred sixty-eight".