82187974319 has 8 divisors (see below), whose sum is σ = 89717509200. Its totient is φ = 74668089600.

The previous prime is 82187974289. The next prime is 82187974333. The reversal of 82187974319 is 91347978128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82187974319 - 2¹² = 82187970223 is a prime.

It is a super-2 number, since 2×82187974319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82187974369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2394722 + ... + 2428799.

It is an arithmetic number, because the mean of its divisors is an integer number (11214688650).

Almost surely, 2^82187974319 is an apocalyptic number.

82187974319 is a deficient number, since it is larger than the sum of its proper divisors (7529534881).

82187974319 is a wasteful number, since it uses less digits than its factorization.

82187974319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4825081.

The product of its digits is 6096384, while the sum is 59.

The spelling of 82187974319 in words is "eighty-two billion, one hundred eighty-seven million, nine hundred seventy-four thousand, three hundred nineteen".