4991236992 has 384 divisors, whose sum is σ = 18147317760. Its totient is φ = 1283014656.

The previous prime is 4991236981. The next prime is 4991237003. The reversal of 4991236992 is 2996321994.

4991236992 is a `hidden beast` number, since 499 + 1 + 2 + 3 + 69 + 92 = 666.

It is an interprime number because it is at equal distance from previous prime (4991236981) and next prime (4991237003).

It is a tau number, because it is divible by the number of its divisors (384).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3152233 + ... + 3153815.

It is an arithmetic number, because the mean of its divisors is an integer number (47258640).

Almost surely, 2^4991236992 is an apocalyptic number.

4991236992 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4991236992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9073658880).

4991236992 is an abundant number, since it is smaller than the sum of its proper divisors (13156080768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4991236992 is a wasteful number, since it uses less digits than its factorization.

4991236992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1635 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 4991236992 is about 70648.6871215594. The cubic root of 4991236992 is about 1708.9763936496.

The spelling of 4991236992 in words is "four billion, nine hundred ninety-one million, two hundred thirty-six thousand, nine hundred ninety-two".