2421909019 has 4 divisors (see below), whose sum is σ = 2422270296. Its totient is φ = 2421547744.

The previous prime is 2421908971. The next prime is 2421909023. The reversal of 2421909019 is 9109091242.

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 2421909019 - 2¹⁷ = 2421777947 is a prime.

It is a super-3 number, since 3×2421909019³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421909059) 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, 170389 + ... + 184054.

It is an arithmetic number, because the mean of its divisors is an integer number (605567574).

Almost surely, 2^2421909019 is an apocalyptic number.

2421909019 is a deficient number, since it is larger than the sum of its proper divisors (361277).

2421909019 is an equidigital number, since it uses as much as digits as its factorization.

2421909019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361276.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 2421909019 is about 49212.8948447457. The cubic root of 2421909019 is about 1342.9276265128.

The spelling of 2421909019 in words is "two billion, four hundred twenty-one million, nine hundred nine thousand, nineteen".