1812889902095 has 16 divisors (see below), whose sum is σ = 2290129465440. Its totient is φ = 1373881751424.

The previous prime is 1812889902059. The next prime is 1812889902101. The reversal of 1812889902095 is 5902099882181.

It is a Cunningham number, because it is equal to 1346436²-1.

It is a cyclic number.

It is not a de Polignac number, because 1812889902095 - 2²⁰ = 1812888853519 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673217 + ... + 2019653.

It is an arithmetic number, because the mean of its divisors is an integer number (143133091590).

Almost surely, 2^{1812889902095} is an apocalyptic number.

1812889902095 is a deficient number, since it is larger than the sum of its proper divisors (477239563345).

1812889902095 is a wasteful number, since it uses less digits than its factorization.

1812889902095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360634.

The product of its (nonzero) digits is 7464960, while the sum is 62.

The spelling of 1812889902095 in words is "one trillion, eight hundred twelve billion, eight hundred eighty-nine million, nine hundred two thousand, ninety-five".