1001720192 has 64 divisors (see below), whose sum is σ = 2184950160. Its totient is φ = 453672960.

The previous prime is 1001720177. The next prime is 1001720201. The reversal of 1001720192 is 2910271001.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439568 + ... + 441840.

Almost surely, 2^1001720192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001720192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1092475080).

1001720192 is an abundant number, since it is smaller than the sum of its proper divisors (1183229968).

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

1001720192 is a wasteful number, since it uses less digits than its factorization.

1001720192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611 (or 2599 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1001720192 is about 31649.9635386836. The cubic root of 1001720192 is about 1000.5730688627.

Adding to 1001720192 its reverse (2910271001), we get a palindrome (3911991193).

The spelling of 1001720192 in words is "one billion, one million, seven hundred twenty thousand, one hundred ninety-two".