163928051438 has 8 divisors (see below), whose sum is σ = 251610497688. Its totient is φ = 80057885544.

The previous prime is 163928051411. The next prime is 163928051447. The reversal of 163928051438 is 834150829361.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953069981 + ... + 953070152.

It is an arithmetic number, because the mean of its divisors is an integer number (31451312211).

Almost surely, 2^163928051438 is an apocalyptic number.

163928051438 is a deficient number, since it is larger than the sum of its proper divisors (87682446250).

163928051438 is a wasteful number, since it uses less digits than its factorization.

163928051438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906140178.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 163928051438 in words is "one hundred sixty-three billion, nine hundred twenty-eight million, fifty-one thousand, four hundred thirty-eight".