163138705294 has 8 divisors (see below), whose sum is σ = 244713684600. Its totient is φ = 81567477096.

The previous prime is 163138705241. The next prime is 163138705309. The reversal of 163138705294 is 492507831361.

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

It is a super-2 number, since 2×163138705294² (a number of 23 digits) contains 22 as substring.

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, 826404 + ... + 1004599.

It is an arithmetic number, because the mean of its divisors is an integer number (30589210575).

It is a 1-persistent number, because it is pandigital, but 2⋅163138705294 = 326277410588 is not.

Almost surely, 2^163138705294 is an apocalyptic number.

163138705294 is a deficient number, since it is larger than the sum of its proper divisors (81574979306).

163138705294 is a wasteful number, since it uses less digits than its factorization.

163138705294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875554.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 163138705294 in words is "one hundred sixty-three billion, one hundred thirty-eight million, seven hundred five thousand, two hundred ninety-four".