993281168898 has 24 divisors (see below), whose sum is σ = 2152221649968. Its totient is φ = 331076422872.

The previous prime is 993281168897. The next prime is 993281168909. The reversal of 993281168898 is 898861182399.

It is not an unprimeable number, because it can be changed into a prime (993281168897) 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, 1085236 + ... + 1778847.

It is an arithmetic number, because the mean of its divisors is an integer number (89675902082).

Almost surely, 2^993281168898 is an apocalyptic number.

993281168898 is an abundant number, since it is smaller than the sum of its proper divisors (1158940481070).

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

993281168898 is a wasteful number, since it uses less digits than its factorization.

993281168898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883358 (or 2883355 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 72.

The spelling of 993281168898 in words is "nine hundred ninety-three billion, two hundred eighty-one million, one hundred sixty-eight thousand, eight hundred ninety-eight".