4991153899 has 2 divisors, whose sum is σ = 4991153900. Its totient is φ = 4991153898.

The previous prime is 4991153897. The next prime is 4991153917. The reversal of 4991153899 is 9983511994.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4991153899 - 2¹ = 4991153897 is a prime.

Together with 4991153897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4991153897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2495576949 + 2495576950.

It is an arithmetic number, because the mean of its divisors is an integer number (2495576950).

Almost surely, 2^4991153899 is an apocalyptic number.

4991153899 is a deficient number, since it is larger than the sum of its proper divisors (1).

4991153899 is an equidigital number, since it uses as much as digits as its factorization.

4991153899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3149280, while the sum is 58.

The square root of 4991153899 is about 70648.0990473204. The cubic root of 4991153899 is about 1708.9669100444.

The spelling of 4991153899 in words is "four billion, nine hundred ninety-one million, one hundred fifty-three thousand, eight hundred ninety-nine".