4540549657 has 4 divisors (see below), whose sum is σ = 5189199616. Its totient is φ = 3891899700.

The previous prime is 4540549619. The next prime is 4540549693. The reversal of 4540549657 is 7569450454.

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 4540549657 - 2³¹ = 2393066009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4540549657.

It is not an unprimeable number, because it can be changed into a prime (4540549157) 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, 324324969 + ... + 324324982.

It is an arithmetic number, because the mean of its divisors is an integer number (1297299904).

Almost surely, 2^4540549657 is an apocalyptic number.

It is an amenable number.

4540549657 is a deficient number, since it is larger than the sum of its proper divisors (648649959).

4540549657 is an equidigital number, since it uses as much as digits as its factorization.

4540549657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648649958.

The product of its (nonzero) digits is 3024000, while the sum is 49.

The square root of 4540549657 is about 67383.6008016787. The cubic root of 4540549657 is about 1655.9077670446.

The spelling of 4540549657 in words is "four billion, five hundred forty million, five hundred forty-nine thousand, six hundred fifty-seven".