4572945409 has 4 divisors (see below), whose sum is σ = 4574986416. Its totient is φ = 4570904404.

The previous prime is 4572945407. The next prime is 4572945449. The reversal of 4572945409 is 9045492754.

It is a happy number.

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 4572945409 - 2¹ = 4572945407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4572945407) 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, 1017139 + ... + 1021624.

It is an arithmetic number, because the mean of its divisors is an integer number (1143746604).

Almost surely, 2^4572945409 is an apocalyptic number.

It is an amenable number.

4572945409 is a deficient number, since it is larger than the sum of its proper divisors (2041007).

4572945409 is a wasteful number, since it uses less digits than its factorization.

4572945409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041006.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The square root of 4572945409 is about 67623.5566130620. The cubic root of 4572945409 is about 1659.8366086097.

The spelling of 4572945409 in words is "four billion, five hundred seventy-two million, nine hundred forty-five thousand, four hundred nine".