18820682403 has 8 divisors (see below), whose sum is σ = 25519569600. Its totient is φ = 12334458408.

The previous prime is 18820682401. The next prime is 18820682437. The reversal of 18820682403 is 30428602881.

It is a happy number.

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

It is not a de Polignac number, because 18820682403 - 2¹ = 18820682401 is a prime.

It is a super-2 number, since 2×18820682403² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18820682401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53165593 + ... + 53165946.

It is an arithmetic number, because the mean of its divisors is an integer number (3189946200).

Almost surely, 2^18820682403 is an apocalyptic number.

18820682403 is a deficient number, since it is larger than the sum of its proper divisors (6698887197).

18820682403 is a wasteful number, since it uses less digits than its factorization.

18820682403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106331601.

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 18820682403 in words is "eighteen billion, eight hundred twenty million, six hundred eighty-two thousand, four hundred three".