4971918 has 32 divisors (see below), whose sum is σ = 11632896. Its totient is φ = 1387008.

The previous prime is 4971907. The next prime is 4971931. The reversal of 4971918 is 8191794.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430 + ... + 3182.

It is an arithmetic number, because the mean of its divisors is an integer number (363528).

Almost surely, 2^4971918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4971918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5816448).

4971918 is an abundant number, since it is smaller than the sum of its proper divisors (6660978).

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

4971918 is a wasteful number, since it uses less digits than its factorization.

4971918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808.

The product of its digits is 18144, while the sum is 39.

The square root of 4971918 is about 2229.7798097570. The cubic root of 4971918 is about 170.6768631671.

It can be divided in two parts, 497 and 1918, that added together give a triangular number (2415 = T₆₉).

The spelling of 4971918 in words is "four million, nine hundred seventy-one thousand, nine hundred eighteen".