4990231820 has 192 divisors, whose sum is σ = 13207756800. Its totient is φ = 1545246720.

The previous prime is 4990231817. The next prime is 4990231837. The reversal of 4990231820 is 281320994.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6019166 + ... + 6019994.

It is an arithmetic number, because the mean of its divisors is an integer number (68790400).

Almost surely, 2^4990231820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4990231820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6603878400).

4990231820 is an abundant number, since it is smaller than the sum of its proper divisors (8217524980).

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

4990231820 is a wasteful number, since it uses less digits than its factorization.

4990231820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 4990231820 is about 70641.5728873586. The cubic root of 4990231820 is about 1708.8616638708.

The spelling of 4990231820 in words is "four billion, nine hundred ninety million, two hundred thirty-one thousand, eight hundred twenty".