18816842744 has 32 divisors (see below), whose sum is σ = 41305269600. Its totient is φ = 7867668480.

The previous prime is 18816842713. The next prime is 18816842773. The reversal of 18816842744 is 44724861881.

It is a happy number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 4095449 + ... + 4100040.

It is an arithmetic number, because the mean of its divisors is an integer number (1290789675).

Almost surely, 2^18816842744 is an apocalyptic number.

18816842744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18816842744 is an abundant number, since it is smaller than the sum of its proper divisors (22488426856).

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

18816842744 is a wasteful number, since it uses less digits than its factorization.

18816842744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8195543 (or 8195539 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 53.

The spelling of 18816842744 in words is "eighteen billion, eight hundred sixteen million, eight hundred forty-two thousand, seven hundred forty-four".