1428944213 has 2 divisors, whose sum is σ = 1428944214. Its totient is φ = 1428944212.

The previous prime is 1428944203. The next prime is 1428944303. The reversal of 1428944213 is 3124498241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 863360689 + 565583524 = 29383^2 + 23782^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428944213 - 2²⁴ = 1412166997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428944203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714472106 + 714472107.

It is an arithmetic number, because the mean of its divisors is an integer number (714472107).

Almost surely, 2^1428944213 is an apocalyptic number.

It is an amenable number.

1428944213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428944213 is an equidigital number, since it uses as much as digits as its factorization.

1428944213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The square root of 1428944213 is about 37801.3784537019. The cubic root of 1428944213 is about 1126.3458363805.

The spelling of 1428944213 in words is "one billion, four hundred twenty-eight million, nine hundred forty-four thousand, two hundred thirteen".