164763981138 has 8 divisors (see below), whose sum is σ = 329527962288. Its totient is φ = 54921327044.

The previous prime is 164763981103. The next prime is 164763981169. The reversal of 164763981138 is 831189367461.

It is a happy number.

164763981138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

164763981138 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13730331756 + ... + 13730331767.

It is an arithmetic number, because the mean of its divisors is an integer number (41190995286).

Almost surely, 2^164763981138 is an apocalyptic number.

164763981138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

164763981138 is a wasteful number, since it uses less digits than its factorization.

164763981138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27460663528.

The product of its digits is 5225472, while the sum is 57.

The spelling of 164763981138 in words is "one hundred sixty-four billion, seven hundred sixty-three million, nine hundred eighty-one thousand, one hundred thirty-eight".