1018815684496 has 15 divisors (see below), whose sum is σ = 1973963211313. Its totient is φ = 509405823520.

The previous prime is 1018815684401. The next prime is 1018815684503. The reversal of 1018815684496 is 6944865188101.

The square root of 1018815684496 is 1009364.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 409042110096 + 609773574400 = 639564^2 + 780880^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3911286 + ... + 4163626.

Almost surely, 2^{1018815684496} is an apocalyptic number.

1018815684496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1018815684496 is the 1009364-th square number.

It is an amenable number.

1018815684496 is a deficient number, since it is larger than the sum of its proper divisors (955147526817).

1018815684496 is an frugal number, since it uses more digits than its factorization.

1018815684496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504690 (or 252343 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 61.

The spelling of 1018815684496 in words is "one trillion, eighteen billion, eight hundred fifteen million, six hundred eighty-four thousand, four hundred ninety-six".