18420313355 has 8 divisors (see below), whose sum is σ = 22105698000. Its totient is φ = 14735369376.

The previous prime is 18420313337. The next prime is 18420313381. The reversal of 18420313355 is 55331302481.

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

It is a cyclic number.

It is not a de Polignac number, because 18420313355 - 2¹⁶ = 18420247819 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 9905 + ... + 192194.

It is an arithmetic number, because the mean of its divisors is an integer number (2763212250).

Almost surely, 2^18420313355 is an apocalyptic number.

18420313355 is a deficient number, since it is larger than the sum of its proper divisors (3685384645).

18420313355 is a wasteful number, since it uses less digits than its factorization.

18420313355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220333.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 18420313355 in words is "eighteen billion, four hundred twenty million, three hundred thirteen thousand, three hundred fifty-five".