4851990 has 144 divisors (see below), whose sum is σ = 15415920. Its totient is φ = 1048320.

The previous prime is 4851989. The next prime is 4852007. The reversal of 4851990 is 991584.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 167296 + ... + 167324.

It is an arithmetic number, because the mean of its divisors is an integer number (107055).

Almost surely, 2^4851990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4851990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7707960).

4851990 is an abundant number, since it is smaller than the sum of its proper divisors (10563930).

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

4851990 is a wasteful number, since it uses less digits than its factorization.

4851990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 4851990 is about 2202.7233144451. The cubic root of 4851990 is about 169.2933760200.

The spelling of 4851990 in words is "four million, eight hundred fifty-one thousand, nine hundred ninety".