7128040418 has 8 divisors (see below), whose sum is σ = 11254800720. Its totient is φ = 3376440180.

The previous prime is 7128040411. The next prime is 7128040453. The reversal of 7128040418 is 8140408217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7128040418² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7128040411) 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, 93789968 + ... + 93790043.

It is an arithmetic number, because the mean of its divisors is an integer number (1406850090).

Almost surely, 2^7128040418 is an apocalyptic number.

7128040418 is a deficient number, since it is larger than the sum of its proper divisors (4126760302).

7128040418 is a wasteful number, since it uses less digits than its factorization.

7128040418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187580032.

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 7128040418 is about 84427.7230416645. The cubic root of 7128040418 is about 1924.5242355361.

The spelling of 7128040418 in words is "seven billion, one hundred twenty-eight million, forty thousand, four hundred eighteen".