648119418 has 16 divisors (see below), whose sum is σ = 1338053376. Its totient is φ = 209070720.

The previous prime is 648119401. The next prime is 648119419. The reversal of 648119418 is 814911846.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 648119418.

It is not an unprimeable number, because it can be changed into a prime (648119419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1742071 + ... + 1742442.

It is an arithmetic number, because the mean of its divisors is an integer number (83628336).

Almost surely, 2^648119418 is an apocalyptic number.

648119418 is an abundant number, since it is smaller than the sum of its proper divisors (689933958).

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

648119418 is a wasteful number, since it uses less digits than its factorization.

648119418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484549.

The product of its digits is 55296, while the sum is 42.

The square root of 648119418 is about 25458.1896057045. The cubic root of 648119418 is about 865.4028964994.

The spelling of 648119418 in words is "six hundred forty-eight million, one hundred nineteen thousand, four hundred eighteen".