1426523666 has 16 divisors (see below), whose sum is σ = 2185587456. Its totient is φ = 698130576.

The previous prime is 1426523663. The next prime is 1426523671. The reversal of 1426523666 is 6663256241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1426523663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12866 + ... + 54941.

It is an arithmetic number, because the mean of its divisors is an integer number (136599216).

Almost surely, 2^1426523666 is an apocalyptic number.

1426523666 is a deficient number, since it is larger than the sum of its proper divisors (759063790).

1426523666 is a wasteful number, since it uses less digits than its factorization.

1426523666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68033.

The product of its digits is 311040, while the sum is 41.

The square root of 1426523666 is about 37769.3482337199. The cubic root of 1426523666 is about 1125.7094891859.

The spelling of 1426523666 in words is "one billion, four hundred twenty-six million, five hundred twenty-three thousand, six hundred sixty-six".