6988165387 has 4 divisors (see below), whose sum is σ = 7986474736. Its totient is φ = 5989856040.

The previous prime is 6988165319. The next prime is 6988165427. The reversal of 6988165387 is 7835618896.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6988165387 - 2⁷ = 6988165259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6988162387) 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, 499154664 + ... + 499154677.

It is an arithmetic number, because the mean of its divisors is an integer number (1996618684).

Almost surely, 2^6988165387 is an apocalyptic number.

6988165387 is a deficient number, since it is larger than the sum of its proper divisors (998309349).

6988165387 is an equidigital number, since it uses as much as digits as its factorization.

6988165387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998309348.

The product of its digits is 17418240, while the sum is 61.

The square root of 6988165387 is about 83595.2473948131. The cubic root of 6988165387 is about 1911.8525365627.

The spelling of 6988165387 in words is "six billion, nine hundred eighty-eight million, one hundred sixty-five thousand, three hundred eighty-seven".