1000218997871 has 8 divisors (see below), whose sum is σ = 1009966663680. Its totient is φ = 990472039992.

The previous prime is 1000218997787. The next prime is 1000218997873. The reversal of 1000218997871 is 1787998120001.

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-1000218997871 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 (1000218997873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2926310 + ... + 3250188.

It is an arithmetic number, because the mean of its divisors is an integer number (126245832960).

Almost surely, 2^{1000218997871} is an apocalyptic number.

1000218997871 is a deficient number, since it is larger than the sum of its proper divisors (9747665809).

1000218997871 is a wasteful number, since it uses less digits than its factorization.

1000218997871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353965.

The product of its (nonzero) digits is 508032, while the sum is 53.

The spelling of 1000218997871 in words is "one trillion, two hundred eighteen million, nine hundred ninety-seven thousand, eight hundred seventy-one".