4869661491 has 8 divisors (see below), whose sum is σ = 7214313360. Its totient is φ = 3246440976.

The previous prime is 4869661421. The next prime is 4869661519. The reversal of 4869661491 is 1941669684.

It is a happy number.

4869661491 is a `hidden beast` number, since 4 + 8 + 6 + 96 + 61 + 491 = 666.

It is not a de Polignac number, because 4869661491 - 2¹⁸ = 4869399347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4869661421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90178890 + ... + 90178943.

It is an arithmetic number, because the mean of its divisors is an integer number (901789170).

Almost surely, 2^4869661491 is an apocalyptic number.

4869661491 is a deficient number, since it is larger than the sum of its proper divisors (2344651869).

4869661491 is a wasteful number, since it uses less digits than its factorization.

4869661491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180357842 (or 180357836 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 4869661491 is about 69782.9598899330. The cubic root of 4869661491 is about 1694.9865548311.

The spelling of 4869661491 in words is "four billion, eight hundred sixty-nine million, six hundred sixty-one thousand, four hundred ninety-one".