4981643 has 4 divisors (see below), whose sum is σ = 5116320. Its totient is φ = 4846968.

The previous prime is 4981637. The next prime is 4981673. The reversal of 4981643 is 3461894.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4981643 - 2⁶ = 4981579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4981633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67283 + ... + 67356.

It is an arithmetic number, because the mean of its divisors is an integer number (1279080).

Almost surely, 2^4981643 is an apocalyptic number.

4981643 is a deficient number, since it is larger than the sum of its proper divisors (134677).

4981643 is a wasteful number, since it uses less digits than its factorization.

4981643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134676.

The product of its digits is 20736, while the sum is 35.

The square root of 4981643 is about 2231.9594530367. The cubic root of 4981643 is about 170.7880711869.

The spelling of 4981643 in words is "four million, nine hundred eighty-one thousand, six hundred forty-three".