988140081 has 4 divisors (see below), whose sum is σ = 1317520112. Its totient is φ = 658760052.

The previous prime is 988140047. The next prime is 988140089. The reversal of 988140081 is 180041889.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 988140081 - 2⁶ = 988140017 is a prime.

It is a super-2 number, since 2×988140081² = 1952841639357373122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988140089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164690011 + ... + 164690016.

It is an arithmetic number, because the mean of its divisors is an integer number (329380028).

Almost surely, 2^988140081 is an apocalyptic number.

It is an amenable number.

988140081 is a deficient number, since it is larger than the sum of its proper divisors (329380031).

988140081 is a wasteful number, since it uses less digits than its factorization.

988140081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329380030.

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 988140081 is about 31434.6954971732. The cubic root of 988140081 is about 996.0309612398.

The spelling of 988140081 in words is "nine hundred eighty-eight million, one hundred forty thousand, eighty-one".