1812829465051 has 4 divisors (see below), whose sum is σ = 1977632143704. Its totient is φ = 1648026786400.

The previous prime is 1812829465021. The next prime is 1812829465079. The reversal of 1812829465051 is 1505649282181.

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

It is a cyclic number.

It is not a de Polignac number, because 1812829465051 - 2¹³ = 1812829456859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1812829465051.

It is not an unprimeable number, because it can be changed into a prime (1812829465021) 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, 82401339310 + ... + 82401339331.

It is an arithmetic number, because the mean of its divisors is an integer number (494408035926).

Almost surely, 2^{1812829465051} is an apocalyptic number.

1812829465051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1812829465051 is a deficient number, since it is larger than the sum of its proper divisors (164802678653).

1812829465051 is a wasteful number, since it uses less digits than its factorization.

1812829465051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164802678652.

The product of its (nonzero) digits is 1382400, while the sum is 52.

The spelling of 1812829465051 in words is "one trillion, eight hundred twelve billion, eight hundred twenty-nine million, four hundred sixty-five thousand, fifty-one".