1218770478182 has 4 divisors (see below), whose sum is σ = 1828155717276. Its totient is φ = 609385239090.

The previous prime is 1218770478151. The next prime is 1218770478187. The reversal of 1218770478182 is 2818740778121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218770478187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304692619544 + ... + 304692619547.

It is an arithmetic number, because the mean of its divisors is an integer number (457038929319).

Almost surely, 2^{1218770478182} is an apocalyptic number.

1218770478182 is a deficient number, since it is larger than the sum of its proper divisors (609385239094).

1218770478182 is an equidigital number, since it uses as much as digits as its factorization.

1218770478182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609385239093.

The product of its (nonzero) digits is 2809856, while the sum is 56.

The spelling of 1218770478182 in words is "one trillion, two hundred eighteen billion, seven hundred seventy million, four hundred seventy-eight thousand, one hundred eighty-two".