2745463821 has 4 divisors (see below), whose sum is σ = 3660618432. Its totient is φ = 1830309212.

The previous prime is 2745463817. The next prime is 2745463823. The reversal of 2745463821 is 1283645472.

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 2745463821 - 2² = 2745463817 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745463823) 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, 457577301 + ... + 457577306.

It is an arithmetic number, because the mean of its divisors is an integer number (915154608).

Almost surely, 2^2745463821 is an apocalyptic number.

It is an amenable number.

2745463821 is a deficient number, since it is larger than the sum of its proper divisors (915154611).

2745463821 is an equidigital number, since it uses as much as digits as its factorization.

2745463821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915154610.

The product of its digits is 322560, while the sum is 42.

The square root of 2745463821 is about 52397.1737882875. The cubic root of 2745463821 is about 1400.2489048944.

The spelling of 2745463821 in words is "two billion, seven hundred forty-five million, four hundred sixty-three thousand, eight hundred twenty-one".