4981637 has 2 divisors, whose sum is σ = 4981638. Its totient is φ = 4981636.

The previous prime is 4981633. The next prime is 4981673. The reversal of 4981637 is 7361894.

Together with next prime (4981673) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4661281 + 320356 = 2159^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 4981637 - 2² = 4981633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4981637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4981631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2490818 + 2490819.

It is an arithmetic number, because the mean of its divisors is an integer number (2490819).

Almost surely, 2^4981637 is an apocalyptic number.

It is an amenable number.

4981637 is a deficient number, since it is larger than the sum of its proper divisors (1).

4981637 is an equidigital number, since it uses as much as digits as its factorization.

4981637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 4981637 is about 2231.9581089259. The cubic root of 4981637 is about 170.7880026199.

The spelling of 4981637 in words is "four million, nine hundred eighty-one thousand, six hundred thirty-seven".