2152213919 has 4 divisors (see below), whose sum is σ = 2152755840. Its totient is φ = 2151672000.

The previous prime is 2152213913. The next prime is 2152213963. The reversal of 2152213919 is 9193122512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2152213919 is a prime.

It is a super-2 number, since 2×2152213919² = 9264049506274677122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152213913) 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 3 ways as a sum of consecutive naturals, for example, 264959 + ... + 272960.

It is an arithmetic number, because the mean of its divisors is an integer number (538188960).

Almost surely, 2^2152213919 is an apocalyptic number.

2152213919 is a deficient number, since it is larger than the sum of its proper divisors (541921).

2152213919 is an equidigital number, since it uses as much as digits as its factorization.

2152213919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541920.

The product of its digits is 9720, while the sum is 35.

The square root of 2152213919 is about 46391.9596374199. The cubic root of 2152213919 is about 1291.1057400296.

The spelling of 2152213919 in words is "two billion, one hundred fifty-two million, two hundred thirteen thousand, nine hundred nineteen".