2153869871 has 8 divisors (see below), whose sum is σ = 2241317760. Its totient is φ = 2068120152.

The previous prime is 2153869829. The next prime is 2153869897. The reversal of 2153869871 is 1789683512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2153869871 - 2¹⁴ = 2153853487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153865871) by changing a digit.

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, 421955 + ... + 427028.

It is an arithmetic number, because the mean of its divisors is an integer number (280164720).

Almost surely, 2^2153869871 is an apocalyptic number.

2153869871 is a deficient number, since it is larger than the sum of its proper divisors (87447889).

2153869871 is an equidigital number, since it uses as much as digits as its factorization.

2153869871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849085.

The product of its digits is 725760, while the sum is 50.

The square root of 2153869871 is about 46409.8036087204. The cubic root of 2153869871 is about 1291.4367884456.

The spelling of 2153869871 in words is "two billion, one hundred fifty-three million, eight hundred sixty-nine thousand, eight hundred seventy-one".