426281819 has 2 divisors, whose sum is σ = 426281820. Its totient is φ = 426281818.

The previous prime is 426281771. The next prime is 426281873. The reversal of 426281819 is 918182624.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426281819 is a prime.

It is a super-2 number, since 2×426281819² = 363432378419897522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (426281419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213140909 + 213140910.

It is an arithmetic number, because the mean of its divisors is an integer number (213140910).

Almost surely, 2^426281819 is an apocalyptic number.

426281819 is a deficient number, since it is larger than the sum of its proper divisors (1).

426281819 is an equidigital number, since it uses as much as digits as its factorization.

426281819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 41.

The square root of 426281819 is about 20646.5933993964. The cubic root of 426281819 is about 752.6024078167.

The spelling of 426281819 in words is "four hundred twenty-six million, two hundred eighty-one thousand, eight hundred nineteen".