1814453816 has 16 divisors (see below), whose sum is σ = 3888115440. Its totient is φ = 777623040.

The previous prime is 1814453803. The next prime is 1814453821. The reversal of 1814453816 is 6183544181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16200425 + ... + 16200536.

It is an arithmetic number, because the mean of its divisors is an integer number (243007215).

Almost surely, 2^1814453816 is an apocalyptic number.

It is an amenable number.

1814453816 is an abundant number, since it is smaller than the sum of its proper divisors (2073661624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1814453816 is a wasteful number, since it uses less digits than its factorization.

1814453816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32400974 (or 32400970 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 1814453816 is about 42596.4061394855. The cubic root of 1814453816 is about 1219.6876867858.

Adding to 1814453816 its reverse (6183544181), we get a palindrome (7997997997).

It can be divided in two parts, 18144 and 53816, that multiplied together give a square (976437504 = 31248²).

The spelling of 1814453816 in words is "one billion, eight hundred fourteen million, four hundred fifty-three thousand, eight hundred sixteen".