6930891438 has 32 divisors (see below), whose sum is σ = 14493600000. Its totient is φ = 2205398976.

The previous prime is 6930891413. The next prime is 6930891439. The reversal of 6930891438 is 8341980396.

It is a super-2 number, since 2×6930891438² = 96074512250683415688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6930891439) 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, 18538 + ... + 119186.

It is an arithmetic number, because the mean of its divisors is an integer number (452925000).

Almost surely, 2^6930891438 is an apocalyptic number.

6930891438 is an abundant number, since it is smaller than the sum of its proper divisors (7562708562).

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

6930891438 is a wasteful number, since it uses less digits than its factorization.

6930891438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101176.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 6930891438 is about 83251.9755801627. The cubic root of 6930891438 is about 1906.6151170650.

The spelling of 6930891438 in words is "six billion, nine hundred thirty million, eight hundred ninety-one thousand, four hundred thirty-eight".