6940218450 has 144 divisors (see below), whose sum is σ = 19081216224. Its totient is φ = 1655596800.

The previous prime is 6940218449. The next prime is 6940218451. The reversal of 6940218450 is 548120496.

It is an interprime number because it is at equal distance from previous prime (6940218449) and next prime (6940218451).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6940218399 and 6940218408.

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 71 ways as a sum of consecutive naturals, for example, 7406382 + ... + 7407318.

It is an arithmetic number, because the mean of its divisors is an integer number (132508446).

Almost surely, 2^6940218450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6940218450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9540608112).

6940218450 is an abundant number, since it is smaller than the sum of its proper divisors (12140997774).

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

6940218450 is a wasteful number, since it uses less digits than its factorization.

6940218450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 6940218450 is about 83307.9735079422. The cubic root of 6940218450 is about 1907.4699879103.

The spelling of 6940218450 in words is "six billion, nine hundred forty million, two hundred eighteen thousand, four hundred fifty".