6938857830 has 32 divisors (see below), whose sum is σ = 16667303904. Its totient is φ = 1848801536.

The previous prime is 6938857829. The next prime is 6938857837. The reversal of 6938857830 is 387588396.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6938857837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61149 + ... + 132728.

It is an arithmetic number, because the mean of its divisors is an integer number (520853247).

Almost surely, 2^6938857830 is an apocalyptic number.

6938857830 is an abundant number, since it is smaller than the sum of its proper divisors (9728446074).

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

6938857830 is a wasteful number, since it uses less digits than its factorization.

6938857830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195080.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The square root of 6938857830 is about 83299.8069025373. The cubic root of 6938857830 is about 1907.3453275001.

The spelling of 6938857830 in words is "six billion, nine hundred thirty-eight million, eight hundred fifty-seven thousand, eight hundred thirty".