6940638940 has 24 divisors (see below), whose sum is σ = 14596463952. Its totient is φ = 2772232320.

The previous prime is 6940638899. The next prime is 6940638967. The reversal of 6940638940 is 498360496.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237289 + ... + 264928.

It is an arithmetic number, because the mean of its divisors is an integer number (608185998).

Almost surely, 2^6940638940 is an apocalyptic number.

It is an amenable number.

6940638940 is an abundant number, since it is smaller than the sum of its proper divisors (7655825012).

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

6940638940 is a wasteful number, since it uses less digits than its factorization.

6940638940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502917 (or 502915 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 6940638940 is about 83310.4971777266. The cubic root of 6940638940 is about 1907.5085100339.

The spelling of 6940638940 in words is "six billion, nine hundred forty million, six hundred thirty-eight thousand, nine hundred forty".