1816042996 has 12 divisors (see below), whose sum is σ = 3178374052. Its totient is φ = 907936128.

The previous prime is 1816042939. The next prime is 1816043063. The reversal of 1816042996 is 6992406181.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 105062500 + 1710980496 = 10250^2 + 41364^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69166 + ... + 91738.

Almost surely, 2^1816042996 is an apocalyptic number.

It is an amenable number.

1816042996 is a deficient number, since it is larger than the sum of its proper divisors (1362331056).

1816042996 is a wasteful number, since it uses less digits than its factorization.

1816042996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42690 (or 42688 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 1816042996 is about 42615.0559779053. The cubic root of 1816042996 is about 1220.0436685973.

The spelling of 1816042996 in words is "one billion, eight hundred sixteen million, forty-two thousand, nine hundred ninety-six".