4601981993 has 4 divisors (see below), whose sum is σ = 5259408000. Its totient is φ = 3944555988.

The previous prime is 4601981987. The next prime is 4601981999. The reversal of 4601981993 is 3991891064.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (4601981987) and next prime (4601981999).

It is a cyclic number.

It is not a de Polignac number, because 4601981993 - 2¹⁴ = 4601965609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4601981999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328712993 + ... + 328713006.

It is an arithmetic number, because the mean of its divisors is an integer number (1314852000).

Almost surely, 2^4601981993 is an apocalyptic number.

It is an amenable number.

4601981993 is a deficient number, since it is larger than the sum of its proper divisors (657426007).

4601981993 is an equidigital number, since it uses as much as digits as its factorization.

4601981993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657426006.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 4601981993 is about 67837.9097039406. The cubic root of 4601981993 is about 1663.3423239269.

The spelling of 4601981993 in words is "four billion, six hundred one million, nine hundred eighty-one thousand, nine hundred ninety-three".