6891742122 has 32 divisors (see below), whose sum is σ = 14340194304. Its totient is φ = 2205630000.

The previous prime is 6891742093. The next prime is 6891742127. The reversal of 6891742122 is 2212471986.

It is a super-2 number, since 2×6891742122² = 94992218952298125768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6891742127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122254 + ... + 169497.

It is an arithmetic number, because the mean of its divisors is an integer number (448131072).

Almost surely, 2^6891742122 is an apocalyptic number.

6891742122 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6891742122 is an abundant number, since it is smaller than the sum of its proper divisors (7448452182).

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

6891742122 is a wasteful number, since it uses less digits than its factorization.

6891742122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291914.

The product of its digits is 96768, while the sum is 42.

The square root of 6891742122 is about 83016.5171637548. The cubic root of 6891742122 is about 1903.0184820374.

The spelling of 6891742122 in words is "six billion, eight hundred ninety-one million, seven hundred forty-two thousand, one hundred twenty-two".