18385780414 has 8 divisors (see below), whose sum is σ = 27640094400. Its totient is φ = 9172415616.

The previous prime is 18385780409. The next prime is 18385780417. The reversal of 18385780414 is 41408758381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18385780414² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18385780417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10236174 + ... + 10237969.

It is an arithmetic number, because the mean of its divisors is an integer number (3455011800).

Almost surely, 2^18385780414 is an apocalyptic number.

18385780414 is a deficient number, since it is larger than the sum of its proper divisors (9254313986).

18385780414 is a wasteful number, since it uses less digits than its factorization.

18385780414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20474594.

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 18385780414 in words is "eighteen billion, three hundred eighty-five million, seven hundred eighty thousand, four hundred fourteen".