18697098816 has 84 divisors (see below), whose sum is σ = 58463864784. Its totient is φ = 5665785600.

The previous prime is 18697098809. The next prime is 18697098817. The reversal of 18697098816 is 61889079681.

It is not an unprimeable number, because it can be changed into a prime (18697098817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1469130 + ... + 1481801.

Almost surely, 2^18697098816 is an apocalyptic number.

18697098816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18697098816 is an abundant number, since it is smaller than the sum of its proper divisors (39766765968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18697098816 is a wasteful number, since it uses less digits than its factorization.

18697098816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950960 (or 2950947 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 63.

The spelling of 18697098816 in words is "eighteen billion, six hundred ninety-seven million, ninety-eight thousand, eight hundred sixteen".