197682758838 has 48 divisors (see below), whose sum is σ = 437765183856. Its totient is φ = 64455739200.

The previous prime is 197682758831. The next prime is 197682758881. The reversal of 197682758838 is 838857286791.

197682758838 is a `hidden beast` number, since 1 + 9 + 7 + 6 + 8 + 2 + 7 + 588 + 38 = 666.

197682758838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×197682758838² (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 (197682758831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 504145 + ... + 805932.

It is an arithmetic number, because the mean of its divisors is an integer number (9120107997).

Almost surely, 2^197682758838 is an apocalyptic number.

197682758838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

197682758838 is an abundant number, since it is smaller than the sum of its proper divisors (240082425018).

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

197682758838 is a wasteful number, since it uses less digits than its factorization.

197682758838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310269 (or 1310266 counting only the distinct ones).

The product of its digits is 325140480, while the sum is 72.

The spelling of 197682758838 in words is "one hundred ninety-seven billion, six hundred eighty-two million, seven hundred fifty-eight thousand, eight hundred thirty-eight".