1812884549 has 8 divisors (see below), whose sum is σ = 2080538880. Its totient is φ = 1547397936.

The previous prime is 1812884543. The next prime is 1812884561. The reversal of 1812884549 is 9454882181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1812884549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1812884497 and 1812884506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812884543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540134 + ... + 543479.

It is an arithmetic number, because the mean of its divisors is an integer number (260067360).

Almost surely, 2^1812884549 is an apocalyptic number.

It is an amenable number.

1812884549 is a deficient number, since it is larger than the sum of its proper divisors (267654331).

1812884549 is a wasteful number, since it uses less digits than its factorization.

1812884549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083859.

The product of its digits is 737280, while the sum is 50.

The square root of 1812884549 is about 42577.9819742552. The cubic root of 1812884549 is about 1219.3359615306.

The spelling of 1812884549 in words is "one billion, eight hundred twelve million, eight hundred eighty-four thousand, five hundred forty-nine".