4936981393 has 4 divisors (see below), whose sum is σ = 4938607908. Its totient is φ = 4935354880.

The previous prime is 4936981367. The next prime is 4936981433. The reversal of 4936981393 is 3931896394.

4936981393 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3931896394 = 2 ⋅1965948197.

It can be written as a sum of positive squares in 2 ways, for example, as 3941705089 + 995276304 = 62783^2 + 31548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4936981393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4936985393) 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, 808696 + ... + 814777.

It is an arithmetic number, because the mean of its divisors is an integer number (1234651977).

Almost surely, 2^4936981393 is an apocalyptic number.

It is an amenable number.

4936981393 is a deficient number, since it is larger than the sum of its proper divisors (1626515).

4936981393 is a wasteful number, since it uses less digits than its factorization.

4936981393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626514.

The product of its digits is 3779136, while the sum is 55.

The square root of 4936981393 is about 70263.6562740653. The cubic root of 4936981393 is about 1702.7615316091.

The spelling of 4936981393 in words is "four billion, nine hundred thirty-six million, nine hundred eighty-one thousand, three hundred ninety-three".