4809697691 has 4 divisors (see below), whose sum is σ = 4877439984. Its totient is φ = 4741955400.

The previous prime is 4809697687. The next prime is 4809697721. The reversal of 4809697691 is 1967969084.

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 4809697691 - 2² = 4809697687 is a prime.

It is a super-3 number, since 3×4809697691³ (a number of 30 digits) contains 333 as substring.

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 4809697691.

It is not an unprimeable number, because it can be changed into a prime (4809697621) 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, 33871040 + ... + 33871181.

It is an arithmetic number, because the mean of its divisors is an integer number (1219359996).

Almost surely, 2^4809697691 is an apocalyptic number.

4809697691 is a deficient number, since it is larger than the sum of its proper divisors (67742293).

4809697691 is an equidigital number, since it uses as much as digits as its factorization.

4809697691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67742292.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 4809697691 is about 69351.9840451591. The cubic root of 4809697691 is about 1688.0005871525. Note that the first 3 decimals are identical.

The spelling of 4809697691 in words is "four billion, eight hundred nine million, six hundred ninety-seven thousand, six hundred ninety-one".