1821282434678 has 16 divisors (see below), whose sum is σ = 3154386074784. Its totient is φ = 772502711040.

The previous prime is 1821282434669. The next prime is 1821282434689. The reversal of 1821282434678 is 8764342821281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670573913 + ... + 670576628.

It is an arithmetic number, because the mean of its divisors is an integer number (197149129674).

Almost surely, 2^{1821282434678} is an apocalyptic number.

1821282434678 is a deficient number, since it is larger than the sum of its proper divisors (1333103640106).

1821282434678 is a wasteful number, since it uses less digits than its factorization.

1821282434678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341150647.

The product of its digits is 8257536, while the sum is 56.

The spelling of 1821282434678 in words is "one trillion, eight hundred twenty-one billion, two hundred eighty-two million, four hundred thirty-four thousand, six hundred seventy-eight".