2169997152 has 96 divisors (see below), whose sum is σ = 5964295680. Its totient is φ = 689902080.

The previous prime is 2169997091. The next prime is 2169997177. The reversal of 2169997152 is 2517999612.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×2169997152² = 9417775279376222208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2169997095 and 2169997104.

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 15 ways as a sum of consecutive naturals, for example, 226377 + ... + 235767.

It is an arithmetic number, because the mean of its divisors is an integer number (62128080).

Almost surely, 2^2169997152 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 2169997152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2982147840).

2169997152 is an abundant number, since it is smaller than the sum of its proper divisors (3794298528).

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

2169997152 is a wasteful number, since it uses less digits than its factorization.

2169997152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9516 (or 9508 counting only the distinct ones).

The product of its digits is 612360, while the sum is 51.

The square root of 2169997152 is about 46583.2282264765. The cubic root of 2169997152 is about 1294.6520239945.

The spelling of 2169997152 in words is "two billion, one hundred sixty-nine million, nine hundred ninety-seven thousand, one hundred fifty-two".