418916945 has 4 divisors (see below), whose sum is σ = 502700340. Its totient is φ = 335133552.

The previous prime is 418916903. The next prime is 418916947. The reversal of 418916945 is 549619814.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182034064 + 236882881 = 13492^2 + 15391^2 .

It is a cyclic number.

It is not a de Polignac number, because 418916945 - 2²² = 414722641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 418916945.

It is not an unprimeable number, because it can be changed into a prime (418916947) 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 3 ways as a sum of consecutive naturals, for example, 41891690 + ... + 41891699.

It is an arithmetic number, because the mean of its divisors is an integer number (125675085).

Almost surely, 2^418916945 is an apocalyptic number.

It is an amenable number.

418916945 is a deficient number, since it is larger than the sum of its proper divisors (83783395).

418916945 is an equidigital number, since it uses as much as digits as its factorization.

418916945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83783394.

The product of its digits is 311040, while the sum is 47.

The square root of 418916945 is about 20467.4606387798. The cubic root of 418916945 is about 748.2429655059.

The spelling of 418916945 in words is "four hundred eighteen million, nine hundred sixteen thousand, nine hundred forty-five".