1428457633 has 2 divisors, whose sum is σ = 1428457634. Its totient is φ = 1428457632.

The previous prime is 1428457609. The next prime is 1428457651. The reversal of 1428457633 is 3367548241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1424081169 + 4376464 = 37737^2 + 2092^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428457633 - 2²⁵ = 1394903201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1428457633.

It is not a weakly prime, because it can be changed into another prime (1428454633) 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 as a sum of consecutive naturals, namely, 714228816 + 714228817.

It is an arithmetic number, because the mean of its divisors is an integer number (714228817).

Almost surely, 2^1428457633 is an apocalyptic number.

It is an amenable number.

1428457633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428457633 is an equidigital number, since it uses as much as digits as its factorization.

1428457633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 43.

The square root of 1428457633 is about 37794.9418970317. The cubic root of 1428457633 is about 1126.2179751779.

It can be divided in two parts, 14284 and 57633, that added together give a palindrome (71917).

The spelling of 1428457633 in words is "one billion, four hundred twenty-eight million, four hundred fifty-seven thousand, six hundred thirty-three".