163947646974 has 8 divisors (see below), whose sum is σ = 327895293960. Its totient is φ = 54649215656.

The previous prime is 163947646939. The next prime is 163947646981. The reversal of 163947646974 is 479646749361.

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

163947646974 is an admirable number.

It is a super-2 number, since 2×163947646974² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13662303909 + ... + 13662303920.

It is an arithmetic number, because the mean of its divisors is an integer number (40986911745).

Almost surely, 2^163947646974 is an apocalyptic number.

163947646974 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.

163947646974 is a wasteful number, since it uses less digits than its factorization.

163947646974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27324607834.

The product of its digits is 164602368, while the sum is 66.

The spelling of 163947646974 in words is "one hundred sixty-three billion, nine hundred forty-seven million, six hundred forty-six thousand, nine hundred seventy-four".