4657991215 has 4 divisors (see below), whose sum is σ = 5589589464. Its totient is φ = 3726392968.

The previous prime is 4657991213. The next prime is 4657991249. The reversal of 4657991215 is 5121997564.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4657991215 - 2¹ = 4657991213 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4657991213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465799117 + ... + 465799126.

It is an arithmetic number, because the mean of its divisors is an integer number (1397397366).

Almost surely, 2^4657991215 is an apocalyptic number.

4657991215 is a deficient number, since it is larger than the sum of its proper divisors (931598249).

4657991215 is an equidigital number, since it uses as much as digits as its factorization.

4657991215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931598248.

The product of its digits is 680400, while the sum is 49.

The square root of 4657991215 is about 68249.4777635697. The cubic root of 4657991215 is about 1670.0631306289.

The spelling of 4657991215 in words is "four billion, six hundred fifty-seven million, nine hundred ninety-one thousand, two hundred fifteen".