18920256682 has 8 divisors (see below), whose sum is σ = 28538935200. Its totient is φ = 9407278284.

The previous prime is 18920256653. The next prime is 18920256689. The reversal of 18920256682 is 28665202981.

It is a happy number.

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

It is a super-2 number, since 2×18920256682² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18920256689) 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, 26424582 + ... + 26425297.

It is an arithmetic number, because the mean of its divisors is an integer number (3567366900).

Almost surely, 2^18920256682 is an apocalyptic number.

18920256682 is a deficient number, since it is larger than the sum of its proper divisors (9618678518).

18920256682 is a wasteful number, since it uses less digits than its factorization.

18920256682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52850060.

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 18920256682 in words is "eighteen billion, nine hundred twenty million, two hundred fifty-six thousand, six hundred eighty-two".