4891493751 has 8 divisors (see below), whose sum is σ = 6732378624. Its totient is φ = 3155802360.

The previous prime is 4891493693. The next prime is 4891493753. The reversal of 4891493751 is 1573941984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4891493751 - 2¹⁹ = 4890969463 is a prime.

It is a super-2 number, since 2×4891493751² = 47853422232144100002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4891493694 and 4891493703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891493753) 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 7 ways as a sum of consecutive naturals, for example, 26298261 + ... + 26298446.

It is an arithmetic number, because the mean of its divisors is an integer number (841547328).

Almost surely, 2^4891493751 is an apocalyptic number.

4891493751 is a deficient number, since it is larger than the sum of its proper divisors (1840884873).

4891493751 is a wasteful number, since it uses less digits than its factorization.

4891493751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52596741.

The product of its digits is 1088640, while the sum is 51.

The square root of 4891493751 is about 69939.2146867550. The cubic root of 4891493751 is about 1697.5158355083.

The spelling of 4891493751 in words is "four billion, eight hundred ninety-one million, four hundred ninety-three thousand, seven hundred fifty-one".