406061818 has 8 divisors (see below), whose sum is σ = 609454260. Its totient is φ = 202910400.

The previous prime is 406061809. The next prime is 406061819. The reversal of 406061818 is 818160604.

It can be written as a sum of positive squares in 2 ways, for example, as 344956329 + 61105489 = 18573^2 + 7817^2 .

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

It is not an unprimeable number, because it can be changed into a prime (406061819) 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, 55983 + ... + 62818.

Almost surely, 2^406061818 is an apocalyptic number.

406061818 is a deficient number, since it is larger than the sum of its proper divisors (203392442).

406061818 is a wasteful number, since it uses less digits than its factorization.

406061818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120512.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 406061818 is about 20150.9756091361. The cubic root of 406061818 is about 740.5096428379.

It can be divided in two parts, 40606 and 1818, that added together give a palindrome (42424).

The spelling of 406061818 in words is "four hundred six million, sixty-one thousand, eight hundred eighteen".