1430426681 has 2 divisors, whose sum is σ = 1430426682. Its totient is φ = 1430426680.

The previous prime is 1430426651. The next prime is 1430426713. The reversal of 1430426681 is 1866240341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1245031225 + 185395456 = 35285^2 + 13616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1430426681 is a prime.

It is a super-2 number, since 2×1430426681² = 4092240979433351522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1430426651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715213340 + 715213341.

It is an arithmetic number, because the mean of its divisors is an integer number (715213341).

Almost surely, 2^1430426681 is an apocalyptic number.

It is an amenable number.

1430426681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1430426681 is an equidigital number, since it uses as much as digits as its factorization.

1430426681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 1430426681 is about 37820.9820205663. The cubic root of 1430426681 is about 1126.7352135020.

The spelling of 1430426681 in words is "one billion, four hundred thirty million, four hundred twenty-six thousand, six hundred eighty-one".