4642667945 has 4 divisors (see below), whose sum is σ = 5571201540. Its totient is φ = 3714134352.

The previous prime is 4642667929. The next prime is 4642667947. The reversal of 4642667945 is 5497662464.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 813162256 + 3829505689 = 28516^2 + 61883^2 .

It is a cyclic number.

It is not a de Polignac number, because 4642667945 - 2⁴ = 4642667929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4642667947) 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, 464266790 + ... + 464266799.

It is an arithmetic number, because the mean of its divisors is an integer number (1392800385).

Almost surely, 2^4642667945 is an apocalyptic number.

It is an amenable number.

4642667945 is a deficient number, since it is larger than the sum of its proper divisors (928533595).

4642667945 is an equidigital number, since it uses as much as digits as its factorization.

4642667945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928533594.

The product of its digits is 8709120, while the sum is 53.

The square root of 4642667945 is about 68137.1260400672. The cubic root of 4642667945 is about 1668.2297980250.

The spelling of 4642667945 in words is "four billion, six hundred forty-two million, six hundred sixty-seven thousand, nine hundred forty-five".