18955609355 has 8 divisors (see below), whose sum is σ = 22767549072. Its totient is φ = 15150608928.

The previous prime is 18955609327. The next prime is 18955609411. The reversal of 18955609355 is 55390655981.

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 18955609355 - 2¹² = 18955605259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18955609355.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1728809 + ... + 1739738.

It is an arithmetic number, because the mean of its divisors is an integer number (2845943634).

Almost surely, 2^18955609355 is an apocalyptic number.

18955609355 is a deficient number, since it is larger than the sum of its proper divisors (3811939717).

18955609355 is a wasteful number, since it uses less digits than its factorization.

18955609355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469645.

The product of its (nonzero) digits is 7290000, while the sum is 56.

The spelling of 18955609355 in words is "eighteen billion, nine hundred fifty-five million, six hundred nine thousand, three hundred fifty-five".