138568196 has 24 divisors (see below), whose sum is σ = 262624320. Its totient is φ = 63592992.

The previous prime is 138568189. The next prime is 138568201. The reversal of 138568196 is 691865831.

It is a super-2 number, since 2×138568196² = 38402289885388832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138568196.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1865 + ... + 16751.

It is an arithmetic number, because the mean of its divisors is an integer number (10942680).

Almost surely, 2^138568196 is an apocalyptic number.

It is an amenable number.

138568196 is a deficient number, since it is larger than the sum of its proper divisors (124056124).

138568196 is a wasteful number, since it uses less digits than its factorization.

138568196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15083 (or 15081 counting only the distinct ones).

The product of its digits is 311040, while the sum is 47.

The square root of 138568196 is about 11771.4993097736. The cubic root of 138568196 is about 517.4731902064.

The spelling of 138568196 in words is "one hundred thirty-eight million, five hundred sixty-eight thousand, one hundred ninety-six".