5050121819 has 4 divisors (see below), whose sum is σ = 5050743600. Its totient is φ = 5049500040.

The previous prime is 5050121789. The next prime is 5050121821. The reversal of 5050121819 is 9181210505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9181210505 = 5 ⋅1836242101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5050121819 is a prime.

It is a super-2 number, since 2×5050121819² = 51007460773479737522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5050121849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298544 + ... + 315005.

It is an arithmetic number, because the mean of its divisors is an integer number (1262685900).

Almost surely, 2^5050121819 is an apocalyptic number.

5050121819 is a deficient number, since it is larger than the sum of its proper divisors (621781).

5050121819 is an equidigital number, since it uses as much as digits as its factorization.

5050121819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621780.

The product of its (nonzero) digits is 3600, while the sum is 32.

The square root of 5050121819 is about 71064.2091280836. The cubic root of 5050121819 is about 1715.6707668650.

The spelling of 5050121819 in words is "five billion, fifty million, one hundred twenty-one thousand, eight hundred nineteen".