1018781863747 has 8 divisors (see below), whose sum is σ = 1023937664000. Its totient is φ = 1013626426824.

The previous prime is 1018781863717. The next prime is 1018781863819. The reversal of 1018781863747 is 7473681878101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1018781863747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1018781863717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6879598 + ... + 7026124.

It is an arithmetic number, because the mean of its divisors is an integer number (127992208000).

Almost surely, 2^{1018781863747} is an apocalyptic number.

1018781863747 is a deficient number, since it is larger than the sum of its proper divisors (5155800253).

1018781863747 is a wasteful number, since it uses less digits than its factorization.

1018781863747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181665.

The product of its (nonzero) digits is 12644352, while the sum is 61.

The spelling of 1018781863747 in words is "one trillion, eighteen billion, seven hundred eighty-one million, eight hundred sixty-three thousand, seven hundred forty-seven".