6918400001 has 4 divisors (see below), whose sum is σ = 6919142400. Its totient is φ = 6917657604.

The previous prime is 6918399937. The next prime is 6918400009. The reversal of 6918400001 is 1000048196.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6918400001 - 2⁶ = 6918399937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6918400009) 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, 357041 + ... + 375918.

It is an arithmetic number, because the mean of its divisors is an integer number (1729785600).

Almost surely, 2^6918400001 is an apocalyptic number.

It is an amenable number.

6918400001 is a deficient number, since it is larger than the sum of its proper divisors (742399).

6918400001 is an equidigital number, since it uses as much as digits as its factorization.

6918400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742398.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 6918400001 is about 83176.9198816595. The cubic root of 6918400001 is about 1905.4690074037.

Adding to 6918400001 its reverse (1000048196), we get a palindrome (7918448197).

The spelling of 6918400001 in words is "six billion, nine hundred eighteen million, four hundred thousand, one".