6923996538 has 64 divisors (see below), whose sum is σ = 14903854848. Its totient is φ = 2136637440.

The previous prime is 6923996533. The next prime is 6923996539. The reversal of 6923996538 is 8356993296.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6923996533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4177806 + ... + 4179462.

It is an arithmetic number, because the mean of its divisors is an integer number (232872732).

Almost surely, 2^6923996538 is an apocalyptic number.

6923996538 is an abundant number, since it is smaller than the sum of its proper divisors (7979858310).

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

6923996538 is a wasteful number, since it uses less digits than its factorization.

6923996538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327.

The product of its digits is 18895680, while the sum is 60.

The square root of 6923996538 is about 83210.5554482122. Note that the first 3 decimals coincide. The cubic root of 6923996538 is about 1905.9826692133.

The spelling of 6923996538 in words is "six billion, nine hundred twenty-three million, nine hundred ninety-six thousand, five hundred thirty-eight".