426491181 has 12 divisors (see below), whose sum is σ = 617420700. Its totient is φ = 283691520.

The previous prime is 426491179. The next prime is 426491209. The reversal of 426491181 is 181194624.

426491181 is a `hidden beast` number, since 4 + 2 + 649 + 1 + 1 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 331604100 + 94887081 = 18210^2 + 9741^2 .

It is not a de Polignac number, because 426491181 - 2¹ = 426491179 is a prime.

It is a super-2 number, since 2×426491181² = 363789454941549522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426491141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48730 + ... + 56811.

It is an arithmetic number, because the mean of its divisors is an integer number (51451725).

Almost surely, 2^426491181 is an apocalyptic number.

It is an amenable number.

426491181 is a deficient number, since it is larger than the sum of its proper divisors (190929519).

426491181 is a wasteful number, since it uses less digits than its factorization.

426491181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105996 (or 105993 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 426491181 is about 20651.6629112524. The cubic root of 426491181 is about 752.7255974922.

The spelling of 426491181 in words is "four hundred twenty-six million, four hundred ninety-one thousand, one hundred eighty-one".