6918970939 has 4 divisors (see below), whose sum is σ = 6919244640. Its totient is φ = 6918697240.

The previous prime is 6918970937. The next prime is 6918970957. The reversal of 6918970939 is 9390798196.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6918970939 - 2¹ = 6918970937 is a prime.

It is a super-3 number, since 3×6918970939³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6918970937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94579 + ... + 150940.

It is an arithmetic number, because the mean of its divisors is an integer number (1729811160).

Almost surely, 2^6918970939 is an apocalyptic number.

6918970939 is a deficient number, since it is larger than the sum of its proper divisors (273701).

6918970939 is a wasteful number, since it uses less digits than its factorization.

6918970939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273700.

The product of its (nonzero) digits is 6613488, while the sum is 61.

The square root of 6918970939 is about 83180.3518807176. The cubic root of 6918970939 is about 1905.5214219668.

The spelling of 6918970939 in words is "six billion, nine hundred eighteen million, nine hundred seventy thousand, nine hundred thirty-nine".