1000521807818 has 32 divisors (see below), whose sum is σ = 1686585390336. Its totient is φ = 441679125888.

The previous prime is 1000521807773. The next prime is 1000521807829. The reversal of 1000521807818 is 8187081250001.

It is a super-2 number, since 2×1000521807818² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17494646 + ... + 17551742.

It is an arithmetic number, because the mean of its divisors is an integer number (52705793448).

Almost surely, 2^{1000521807818} is an apocalyptic number.

1000521807818 is a deficient number, since it is larger than the sum of its proper divisors (686063582518).

1000521807818 is a wasteful number, since it uses less digits than its factorization.

1000521807818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86438.

The product of its (nonzero) digits is 35840, while the sum is 41.

The spelling of 1000521807818 in words is "one trillion, five hundred twenty-one million, eight hundred seven thousand, eight hundred eighteen".