4921594493 has 4 divisors (see below), whose sum is σ = 4921766460. Its totient is φ = 4921422528.

The previous prime is 4921594471. The next prime is 4921594499. The reversal of 4921594493 is 3944951294.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3828763129 + 1092831364 = 61877^2 + 33058^2 .

It is a cyclic number.

It is not a de Polignac number, because 4921594493 - 2¹² = 4921590397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4921594499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31580 + ... + 104117.

It is an arithmetic number, because the mean of its divisors is an integer number (1230441615).

Almost surely, 2^4921594493 is an apocalyptic number.

It is an amenable number.

4921594493 is a deficient number, since it is larger than the sum of its proper divisors (171967).

4921594493 is a wasteful number, since it uses less digits than its factorization.

4921594493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171966.

The product of its digits is 1399680, while the sum is 50.

The square root of 4921594493 is about 70154.0768095483. The cubic root of 4921594493 is about 1700.9907135305.

The spelling of 4921594493 in words is "four billion, nine hundred twenty-one million, five hundred ninety-four thousand, four hundred ninety-three".