1118447653803 has 32 divisors (see below), whose sum is σ = 1648549366272. Its totient is φ = 670887360000.

The previous prime is 1118447653789. The next prime is 1118447653879. The reversal of 1118447653803 is 3083567448111.

It is a happy number.

It is not a de Polignac number, because 1118447653803 - 2⁴ = 1118447653787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1118447653003) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 1861053 + ... + 2387553.

It is an arithmetic number, because the mean of its divisors is an integer number (51517167696).

Almost surely, 2^{1118447653803} is an apocalyptic number.

1118447653803 is a deficient number, since it is larger than the sum of its proper divisors (530101712469).

1118447653803 is a wasteful number, since it uses less digits than its factorization.

1118447653803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528355.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 1118447653803 in words is "one trillion, one hundred eighteen billion, four hundred forty-seven million, six hundred fifty-three thousand, eight hundred three".