2745684121 has 4 divisors (see below), whose sum is σ = 2792221200. Its totient is φ = 2699147044.

The previous prime is 2745684113. The next prime is 2745684163. The reversal of 2745684121 is 1214865472.

2745684121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2745684121 - 2³ = 2745684113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2745684181) 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, 23268451 + ... + 23268568.

It is an arithmetic number, because the mean of its divisors is an integer number (698055300).

Almost surely, 2^2745684121 is an apocalyptic number.

It is an amenable number.

2745684121 is a deficient number, since it is larger than the sum of its proper divisors (46537079).

2745684121 is an equidigital number, since it uses as much as digits as its factorization.

2745684121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46537078.

The product of its digits is 107520, while the sum is 40.

The square root of 2745684121 is about 52399.2759587382. The cubic root of 2745684121 is about 1400.2863565606.

The spelling of 2745684121 in words is "two billion, seven hundred forty-five million, six hundred eighty-four thousand, one hundred twenty-one".