6940218448 has 20 divisors (see below), whose sum is σ = 14237654580. Its totient is φ = 3265985024.

The previous prime is 6940218443. The next prime is 6940218449. The reversal of 6940218448 is 8448120496.

It can be written as a sum of positive squares in 2 ways, for example, as 2106075664 + 4834142784 = 45892^2 + 69528^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6940218398 and 6940218407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6940218443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12757483 + ... + 12758026.

It is an arithmetic number, because the mean of its divisors is an integer number (711882729).

Almost surely, 2^6940218448 is an apocalyptic number.

6940218448 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6940218448 is an abundant number, since it is smaller than the sum of its proper divisors (7297436132).

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

6940218448 is a wasteful number, since it uses less digits than its factorization.

6940218448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25515534 (or 25515528 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 6940218448 is about 83307.9734959386. The cubic root of 6940218448 is about 1907.4699877271.

The spelling of 6940218448 in words is "six billion, nine hundred forty million, two hundred eighteen thousand, four hundred forty-eight".