2124851819 has 4 divisors (see below), whose sum is σ = 2125632600. Its totient is φ = 2124071040.

The previous prime is 2124851809. The next prime is 2124851867. The reversal of 2124851819 is 9181584212.

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

It is a cyclic number.

It is not a de Polignac number, because 2124851819 - 2⁸ = 2124851563 is a prime.

It is a super-2 number, since 2×2124851819² = 9029990505415217522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124851809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386294 + ... + 391755.

It is an arithmetic number, because the mean of its divisors is an integer number (531408150).

Almost surely, 2^2124851819 is an apocalyptic number.

2124851819 is a deficient number, since it is larger than the sum of its proper divisors (780781).

2124851819 is an equidigital number, since it uses as much as digits as its factorization.

2124851819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780780.

The product of its digits is 46080, while the sum is 41.

The square root of 2124851819 is about 46096.1150098357. The cubic root of 2124851819 is about 1285.6109110990.

The spelling of 2124851819 in words is "two billion, one hundred twenty-four million, eight hundred fifty-one thousand, eight hundred nineteen".