6940218452 has 12 divisors (see below), whose sum is σ = 12146583540. Its totient is φ = 3469766016.

The previous prime is 6940218451. The next prime is 6940218463. The reversal of 6940218452 is 2548120496.

It can be written as a sum of positive squares in 2 ways, for example, as 5753829316 + 1186389136 = 75854^2 + 34444^2 .

It is a super-2 number, since 2×6940218452² = 96333264322962552608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6940218451) 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 3 ways as a sum of consecutive naturals, for example, 37253 + ... + 123564.

It is an arithmetic number, because the mean of its divisors is an integer number (1012215295).

Almost surely, 2^6940218452 is an apocalyptic number.

It is an amenable number.

6940218452 is a deficient number, since it is larger than the sum of its proper divisors (5206365088).

6940218452 is a wasteful number, since it uses less digits than its factorization.

6940218452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171610 (or 171608 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 6940218452 is about 83307.9735199459. The cubic root of 6940218452 is about 1907.4699880936.

The spelling of 6940218452 in words is "six billion, nine hundred forty million, two hundred eighteen thousand, four hundred fifty-two".