1001722163 has 4 divisors (see below), whose sum is σ = 1078777728. Its totient is φ = 924666600.

The previous prime is 1001722157. The next prime is 1001722187. The reversal of 1001722163 is 3612271001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1001722163 - 2⁸ = 1001721907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001722153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38527763 + ... + 38527788.

It is an arithmetic number, because the mean of its divisors is an integer number (269694432).

Almost surely, 2^1001722163 is an apocalyptic number.

1001722163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1001722163 is a deficient number, since it is larger than the sum of its proper divisors (77055565).

1001722163 is an equidigital number, since it uses as much as digits as its factorization.

1001722163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77055564.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1001722163 is about 31649.9946761449. The cubic root of 1001722163 is about 1000.5737251099.

Adding to 1001722163 its reverse (3612271001), we get a palindrome (4613993164).

The spelling of 1001722163 in words is "one billion, one million, seven hundred twenty-two thousand, one hundred sixty-three".