18910885982 has 8 divisors (see below), whose sum is σ = 29599647696. Its totient is φ = 9044336752.

The previous prime is 18910885979. The next prime is 18910886017. The reversal of 18910885982 is 28958801981.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205553063 + ... + 205553154.

It is an arithmetic number, because the mean of its divisors is an integer number (3699955962).

Almost surely, 2^18910885982 is an apocalyptic number.

18910885982 is a deficient number, since it is larger than the sum of its proper divisors (10688761714).

18910885982 is a wasteful number, since it uses less digits than its factorization.

18910885982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411106242.

The product of its (nonzero) digits is 3317760, while the sum is 59.

The spelling of 18910885982 in words is "eighteen billion, nine hundred ten million, eight hundred eighty-five thousand, nine hundred eighty-two".