1812690893422 has 4 divisors (see below), whose sum is σ = 2719036340136. Its totient is φ = 906345446710.

The previous prime is 1812690893371. The next prime is 1812690893437. The reversal of 1812690893422 is 2243980962181.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453172723354 + ... + 453172723357.

It is an arithmetic number, because the mean of its divisors is an integer number (679759085034).

Almost surely, 2^{1812690893422} is an apocalyptic number.

1812690893422 is a deficient number, since it is larger than the sum of its proper divisors (906345446714).

1812690893422 is an equidigital number, since it uses as much as digits as its factorization.

1812690893422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906345446713.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 1812690893422 in words is "one trillion, eight hundred twelve billion, six hundred ninety million, eight hundred ninety-three thousand, four hundred twenty-two".