18980646458 has 8 divisors (see below), whose sum is σ = 29389388160. Its totient is φ = 9184183740.

The previous prime is 18980646437. The next prime is 18980646473. The reversal of 18980646458 is 85464608981.

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

It is a junction number, because it is equal to n+sod(n) for n = 18980646397 and 18980646406.

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, 153069668 + ... + 153069791.

It is an arithmetic number, because the mean of its divisors is an integer number (3673673520).

Almost surely, 2^18980646458 is an apocalyptic number.

18980646458 is a deficient number, since it is larger than the sum of its proper divisors (10408741702).

18980646458 is a wasteful number, since it uses less digits than its factorization.

18980646458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306139492.

The product of its (nonzero) digits is 13271040, while the sum is 59.

The spelling of 18980646458 in words is "eighteen billion, nine hundred eighty million, six hundred forty-six thousand, four hundred fifty-eight".