2169997153 has 4 divisors (see below), whose sum is σ = 2170886400. Its totient is φ = 2169107908.

The previous prime is 2169997091. The next prime is 2169997177. The reversal of 2169997153 is 3517999612.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2169997153 - 2⁹ = 2169996641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2169997153.

It is not an unprimeable number, because it can be changed into a prime (2169997183) 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, 440953 + ... + 445846.

It is an arithmetic number, because the mean of its divisors is an integer number (542721600).

Almost surely, 2^2169997153 is an apocalyptic number.

It is an amenable number.

2169997153 is a deficient number, since it is larger than the sum of its proper divisors (889247).

2169997153 is an equidigital number, since it uses as much as digits as its factorization.

2169997153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889246.

The product of its digits is 918540, while the sum is 52.

The square root of 2169997153 is about 46583.2282372100. The cubic root of 2169997153 is about 1294.6520241933.

The spelling of 2169997153 in words is "two billion, one hundred sixty-nine million, nine hundred ninety-seven thousand, one hundred fifty-three".