426243613 has 4 divisors (see below), whose sum is σ = 444775968. Its totient is φ = 407711260.

The previous prime is 426243557. The next prime is 426243637. The reversal of 426243613 is 316342624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 426243613 - 2²¹ = 424146461 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426243113) 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, 9266143 + ... + 9266188.

It is an arithmetic number, because the mean of its divisors is an integer number (111193992).

Almost surely, 2^426243613 is an apocalyptic number.

It is an amenable number.

426243613 is a deficient number, since it is larger than the sum of its proper divisors (18532355).

426243613 is a wasteful number, since it uses less digits than its factorization.

426243613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18532354.

The product of its digits is 20736, while the sum is 31.

The square root of 426243613 is about 20645.6681412833. The cubic root of 426243613 is about 752.5799228584.

The spelling of 426243613 in words is "four hundred twenty-six million, two hundred forty-three thousand, six hundred thirteen".