1426665633 has 4 divisors (see below), whose sum is σ = 1902220848. Its totient is φ = 951110420.

The previous prime is 1426665623. The next prime is 1426665697. The reversal of 1426665633 is 3365666241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1426665633 - 2²² = 1422471329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1426665623) 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 3 ways as a sum of consecutive naturals, for example, 237777603 + ... + 237777608.

It is an arithmetic number, because the mean of its divisors is an integer number (475555212).

Almost surely, 2^1426665633 is an apocalyptic number.

It is an amenable number.

1426665633 is a deficient number, since it is larger than the sum of its proper divisors (475555215).

1426665633 is an equidigital number, since it uses as much as digits as its factorization.

1426665633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475555214.

The product of its digits is 466560, while the sum is 42.

The square root of 1426665633 is about 37771.2275813217. The cubic root of 1426665633 is about 1125.7468313162.

The spelling of 1426665633 in words is "one billion, four hundred twenty-six million, six hundred sixty-five thousand, six hundred thirty-three".