1018195817472 has 132 divisors (see below), whose sum is σ = 3112961060196. Its totient is φ = 319433932800.

The previous prime is 1018195817437. The next prime is 1018195817479. The reversal of 1018195817472 is 2747185918101.

It is a happy number.

1018195817472 is a `hidden beast` number, since 1 + 0 + 1 + 8 + 1 + 95 + 81 + 7 + 472 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 793838232576 + 224357584896 = 890976^2 + 473664^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018195817479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3092779 + ... + 3406122.

Almost surely, 2^{1018195817472} is an apocalyptic number.

1018195817472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1018195817472 is an abundant number, since it is smaller than the sum of its proper divisors (2094765242724).

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

1018195817472 is a wasteful number, since it uses less digits than its factorization.

1018195817472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6498944 (or 6498923 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 54.

The spelling of 1018195817472 in words is "one trillion, eighteen billion, one hundred ninety-five million, eight hundred seventeen thousand, four hundred seventy-two".