1428981629 has 2 divisors, whose sum is σ = 1428981630. Its totient is φ = 1428981628.

The previous prime is 1428981623. The next prime is 1428981649. The reversal of 1428981629 is 9261898241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 783720025 + 645261604 = 27995^2 + 25402^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428981629 - 2²⁸ = 1160546173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428981623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714490814 + 714490815.

It is an arithmetic number, because the mean of its divisors is an integer number (714490815).

Almost surely, 2^1428981629 is an apocalyptic number.

It is an amenable number.

1428981629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428981629 is an equidigital number, since it uses as much as digits as its factorization.

1428981629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 50.

The square root of 1428981629 is about 37801.8733530496. The cubic root of 1428981629 is about 1126.3556671790.

The spelling of 1428981629 in words is "one billion, four hundred twenty-eight million, nine hundred eighty-one thousand, six hundred twenty-nine".