163791802944 has 945 divisors, whose sum is σ = 629434517481. Its totient is φ = 41960540160.

The previous prime is 163791802939. The next prime is 163791802961. The reversal of 163791802944 is 449208197361.

The square root of 163791802944 is 404712.

It is a perfect power (a square), and thus also a powerful number.

163791802944 is a `hidden beast` number, since 1 + 6 + 379 + 180 + 2 + 94 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 92976206400 + 70815596544 = 304920^2 + 266112^2 .

It is a super-2 number, since 2×163791802944² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 2243723292 + ... + 2243723364.

Almost surely, 2^163791802944 is an apocalyptic number.

163791802944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

163791802944 is the 404712-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163791802944

163791802944 is an abundant number, since it is smaller than the sum of its proper divisors (465642714537).

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

163791802944 is an equidigital number, since it uses as much as digits as its factorization.

163791802944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 163791802944 in words is "one hundred sixty-three billion, seven hundred ninety-one million, eight hundred two thousand, nine hundred forty-four".