4797578649 has 4 divisors (see below), whose sum is σ = 6396771536. Its totient is φ = 3198385764.

The previous prime is 4797578629. The next prime is 4797578677. The reversal of 4797578649 is 9468757974.

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 not a de Polignac number, because 4797578649 - 2⁷ = 4797578521 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 4797578649.

It is not an unprimeable number, because it can be changed into a prime (4797578629) 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, 799596439 + ... + 799596444.

It is an arithmetic number, because the mean of its divisors is an integer number (1599192884).

Almost surely, 2^4797578649 is an apocalyptic number.

It is an amenable number.

4797578649 is a deficient number, since it is larger than the sum of its proper divisors (1599192887).

4797578649 is a wasteful number, since it uses less digits than its factorization.

4797578649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599192886.

The product of its digits is 106686720, while the sum is 66.

The square root of 4797578649 is about 69264.5555027967. Note that the first 4 decimals coincide. The cubic root of 4797578649 is about 1686.5816375443.

The spelling of 4797578649 in words is "four billion, seven hundred ninety-seven million, five hundred seventy-eight thousand, six hundred forty-nine".