4991957049 has 8 divisors (see below), whose sum is σ = 6663658752. Its totient is φ = 3324113360.

The previous prime is 4991957041. The next prime is 4991957071. The reversal of 4991957049 is 9407591994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4991957049 - 2³ = 4991957041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4991957049.

It is not an unprimeable number, because it can be changed into a prime (4991957041) 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, 961482 + ... + 966659.

It is an arithmetic number, because the mean of its divisors is an integer number (832957344).

Almost surely, 2^4991957049 is an apocalyptic number.

It is an amenable number.

4991957049 is a deficient number, since it is larger than the sum of its proper divisors (1671701703).

4991957049 is a wasteful number, since it uses less digits than its factorization.

4991957049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929007.

The product of its (nonzero) digits is 3674160, while the sum is 57.

The square root of 4991957049 is about 70653.7829772759. The cubic root of 4991957049 is about 1709.0585710902.

The spelling of 4991957049 in words is "four billion, nine hundred ninety-one million, nine hundred fifty-seven thousand, forty-nine".