1426664775 has 12 divisors (see below), whose sum is σ = 2358752552. Its totient is φ = 760887840.

The previous prime is 1426664753. The next prime is 1426664777. The reversal of 1426664775 is 5774666241.

It is not a de Polignac number, because 1426664775 - 2¹⁸ = 1426402631 is a prime.

It is a super-4 number, since 4×1426664775⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426664777) 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, 9511024 + ... + 9511173.

Almost surely, 2^1426664775 is an apocalyptic number.

1426664775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1426664775 is a deficient number, since it is larger than the sum of its proper divisors (932087777).

1426664775 is a wasteful number, since it uses less digits than its factorization.

1426664775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19022210 (or 19022205 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The square root of 1426664775 is about 37771.2162234684. The cubic root of 1426664775 is about 1125.7466056405.

The spelling of 1426664775 in words is "one billion, four hundred twenty-six million, six hundred sixty-four thousand, seven hundred seventy-five".