2421889685 has 4 divisors (see below), whose sum is σ = 2906267628. Its totient is φ = 1937511744.

The previous prime is 2421889661. The next prime is 2421889711. The reversal of 2421889685 is 5869881242.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1417823716 + 1004065969 = 37654^2 + 31687^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421889685 - 2⁶ = 2421889621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242188964 + ... + 242188973.

It is an arithmetic number, because the mean of its divisors is an integer number (726566907).

Almost surely, 2^2421889685 is an apocalyptic number.

It is an amenable number.

2421889685 is a deficient number, since it is larger than the sum of its proper divisors (484377943).

2421889685 is an equidigital number, since it uses as much as digits as its factorization.

2421889685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484377942.

The product of its digits is 2211840, while the sum is 53.

The square root of 2421889685 is about 49212.6984120969. The cubic root of 2421889685 is about 1342.9240529913.

The spelling of 2421889685 in words is "two billion, four hundred twenty-one million, eight hundred eighty-nine thousand, six hundred eighty-five".