6989916738 has 32 divisors (see below), whose sum is σ = 16303017600. Its totient is φ = 1997118480.

The previous prime is 6989916727. The next prime is 6989916779. The reversal of 6989916738 is 8376199896.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1696173 + ... + 1700288.

It is an arithmetic number, because the mean of its divisors is an integer number (509469300).

Almost surely, 2^6989916738 is an apocalyptic number.

6989916738 is an abundant number, since it is smaller than the sum of its proper divisors (9313100862).

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

6989916738 is a wasteful number, since it uses less digits than its factorization.

6989916738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396487 (or 3396473 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 66.

The square root of 6989916738 is about 83605.7219214092. The cubic root of 6989916738 is about 1912.0122372848.

The spelling of 6989916738 in words is "six billion, nine hundred eighty-nine million, nine hundred sixteen thousand, seven hundred thirty-eight".