4891456787874 has 8 divisors (see below), whose sum is σ = 9782913575760. Its totient is φ = 1630485595956.

The previous prime is 4891456787873. The next prime is 4891456787891. The reversal of 4891456787874 is 4787876541984.

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

4891456787874 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 4891456787874.

It is not an unprimeable number, because it can be changed into a prime (4891456787873) 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, 407621398984 + ... + 407621398995.

It is an arithmetic number, because the mean of its divisors is an integer number (1222864196970).

Almost surely, 2^{4891456787874} is an apocalyptic number.

4891456787874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4891456787874 is a wasteful number, since it uses less digits than its factorization.

4891456787874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815242797984.

The product of its digits is 3034644480, while the sum is 78.

The spelling of 4891456787874 in words is "four trillion, eight hundred ninety-one billion, four hundred fifty-six million, seven hundred eighty-seven thousand, eight hundred seventy-four".