426864181 has 6 divisors (see below), whose sum is σ = 429147446. Its totient is φ = 424593000.

The previous prime is 426864149. The next prime is 426864247. The reversal of 426864181 is 181468624.

It can be written as a sum of positive squares in only one way, i.e., 402203025 + 24661156 = 20055^2 + 4966^2 .

It is not a de Polignac number, because 426864181 - 2⁵ = 426864149 is a prime.

It is a super-3 number, since 3×426864181³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426864121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30631 + ... + 42331.

Almost surely, 2^426864181 is an apocalyptic number.

It is an amenable number.

426864181 is a deficient number, since it is larger than the sum of its proper divisors (2283265).

426864181 is an equidigital number, since it uses as much as digits as its factorization.

426864181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12083 (or 11892 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 426864181 is about 20660.6916873565. The cubic root of 426864181 is about 752.9449727488.

The spelling of 426864181 in words is "four hundred twenty-six million, eight hundred sixty-four thousand, one hundred eighty-one".