418661849 has 4 divisors (see below), whose sum is σ = 425525220. Its totient is φ = 411798480.

The previous prime is 418661833. The next prime is 418661857. The reversal of 418661849 is 948166814.

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 202777600 + 215884249 = 14240^2 + 14693^2 .

It is a cyclic number.

It is not a de Polignac number, because 418661849 - 2⁴ = 418661833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (418661879) 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, 3431594 + ... + 3431715.

It is an arithmetic number, because the mean of its divisors is an integer number (106381305).

Almost surely, 2^418661849 is an apocalyptic number.

It is an amenable number.

418661849 is a deficient number, since it is larger than the sum of its proper divisors (6863371).

418661849 is an equidigital number, since it uses as much as digits as its factorization.

418661849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6863370.

The product of its digits is 331776, while the sum is 47.

The square root of 418661849 is about 20461.2279445785. The cubic root of 418661849 is about 748.0910558839.

The spelling of 418661849 in words is "four hundred eighteen million, six hundred sixty-one thousand, eight hundred forty-nine".