493881981791 has 48 divisors (see below), whose sum is σ = 562146312000. Its totient is φ = 433390003200.

The previous prime is 493881981767. The next prime is 493881981797. The reversal of 493881981791 is 197189188394.

It is not a de Polignac number, because 493881981791 - 2¹⁸ = 493881719647 is a prime.

It is a Duffinian number.

Its product of digits (31352832) is a multiple of the sum of its prime factors (6048).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493881981797) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85904585 + ... + 85910333.

It is an arithmetic number, because the mean of its divisors is an integer number (11711381500).

Almost surely, 2^493881981791 is an apocalyptic number.

493881981791 is a deficient number, since it is larger than the sum of its proper divisors (68264330209).

493881981791 is a wasteful number, since it uses less digits than its factorization.

493881981791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6048 (or 6037 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 68.

The spelling of 493881981791 in words is "four hundred ninety-three billion, eight hundred eighty-one million, nine hundred eighty-one thousand, seven hundred ninety-one".