1426026491 has 2 divisors, whose sum is σ = 1426026492. Its totient is φ = 1426026490.

The previous prime is 1426026467. The next prime is 1426026517. The reversal of 1426026491 is 1946206241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1426026491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1426026421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713013245 + 713013246.

It is an arithmetic number, because the mean of its divisors is an integer number (713013246).

Almost surely, 2^1426026491 is an apocalyptic number.

1426026491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1426026491 is an equidigital number, since it uses as much as digits as its factorization.

1426026491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1426026491 is about 37762.7659341844. The cubic root of 1426026491 is about 1125.5786957844.

The spelling of 1426026491 in words is "one billion, four hundred twenty-six million, twenty-six thousand, four hundred ninety-one".