1812741975028 has 12 divisors (see below), whose sum is σ = 3358904247972. Its totient is φ = 853055047040.

The previous prime is 1812741975013. The next prime is 1812741975029. The reversal of 1812741975028 is 8205791472181.

It can be written as a sum of positive squares in 2 ways, for example, as 820941099364 + 991800875664 = 906058^2 + 995892^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1812741975028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812741975029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13328985043 + ... + 13328985178.

It is an arithmetic number, because the mean of its divisors is an integer number (279908687331).

Almost surely, 2^{1812741975028} is an apocalyptic number.

It is an amenable number.

1812741975028 is a deficient number, since it is larger than the sum of its proper divisors (1546162272944).

1812741975028 is a wasteful number, since it uses less digits than its factorization.

1812741975028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26657970242 (or 26657970240 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 55.

The spelling of 1812741975028 in words is "one trillion, eight hundred twelve billion, seven hundred forty-one million, nine hundred seventy-five thousand, twenty-eight".