1810842916 has 9 divisors (see below), whose sum is σ = 3169124049. Its totient is φ = 905378904.

The previous prime is 1810842893. The next prime is 1810842973. The reversal of 1810842916 is 6192480181.

The square root of 1810842916 is 42554.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 88924900 + 1721918016 = 9430^2 + 41496^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 74470 + ... + 95746.

Almost surely, 2^1810842916 is an apocalyptic number.

1810842916 is the 42554-th square number.

It is an amenable number.

1810842916 is a deficient number, since it is larger than the sum of its proper divisors (1358281133).

1810842916 is an frugal number, since it uses more digits than its factorization.

1810842916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42558 (or 21279 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The cubic root of 1810842916 is about 1218.8780592994.

The spelling of 1810842916 in words is "one billion, eight hundred ten million, eight hundred forty-two thousand, nine hundred sixteen".