18743719340 has 24 divisors (see below), whose sum is σ = 39767606592. Its totient is φ = 7420193280.

The previous prime is 18743719339. The next prime is 18743719343. The reversal of 18743719340 is 4391734781.

It is not an unprimeable number, because it can be changed into a prime (18743719343) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4828916 + ... + 4832795.

It is an arithmetic number, because the mean of its divisors is an integer number (1656983608).

Almost surely, 2^18743719340 is an apocalyptic number.

18743719340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18743719340 is an abundant number, since it is smaller than the sum of its proper divisors (21023887252).

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

18743719340 is a wasteful number, since it uses less digits than its factorization.

18743719340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9661817 (or 9661815 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 18743719340 in words is "eighteen billion, seven hundred forty-three million, seven hundred nineteen thousand, three hundred forty".