1115385781682 has 4 divisors (see below), whose sum is σ = 1673078672526. Its totient is φ = 557692890840.

The previous prime is 1115385781673. The next prime is 1115385781693. The reversal of 1115385781682 is 2861875835111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 603000393961 + 512385387721 = 776531^2 + 715811^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 278846445419 + ... + 278846445422.

Almost surely, 2^{1115385781682} is an apocalyptic number.

1115385781682 is a deficient number, since it is larger than the sum of its proper divisors (557692890844).

1115385781682 is an equidigital number, since it uses as much as digits as its factorization.

1115385781682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557692890843.

The product of its digits is 3225600, while the sum is 56.

The spelling of 1115385781682 in words is "one trillion, one hundred fifteen billion, three hundred eighty-five million, seven hundred eighty-one thousand, six hundred eighty-two".