2745736641 has 6 divisors (see below), whose sum is σ = 3966064050. Its totient is φ = 1830491088.

The previous prime is 2745736627. The next prime is 2745736699. The reversal of 2745736641 is 1466375472.

2745736641 is a `hidden beast` number, since 2 + 74 + 573 + 6 + 6 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2325650625 + 420086016 = 48225^2 + 20496^2 .

It is not a de Polignac number, because 2745736641 - 2²¹ = 2743639489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2745736841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152540916 + ... + 152540933.

It is an arithmetic number, because the mean of its divisors is an integer number (661010675).

Almost surely, 2^2745736641 is an apocalyptic number.

It is an amenable number.

2745736641 is a deficient number, since it is larger than the sum of its proper divisors (1220327409).

2745736641 is a wasteful number, since it uses less digits than its factorization.

2745736641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305081855 (or 305081852 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 2745736641 is about 52399.7771083046. Note that the first 3 decimals coincide. The cubic root of 2745736641 is about 1400.2952848237.

The spelling of 2745736641 in words is "two billion, seven hundred forty-five million, seven hundred thirty-six thousand, six hundred forty-one".