1428644357293 has 2 divisors, whose sum is σ = 1428644357294. Its totient is φ = 1428644357292.

The previous prime is 1428644357251. The next prime is 1428644357321. The reversal of 1428644357293 is 3927534468241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1388254210564 + 40390146729 = 1178242^2 + 200973^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428644357293 - 2¹³ = 1428644349101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428644357093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714322178646 + 714322178647.

It is an arithmetic number, because the mean of its divisors is an integer number (714322178647).

Almost surely, 2^{1428644357293} is an apocalyptic number.

It is an amenable number.

1428644357293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428644357293 is an equidigital number, since it uses as much as digits as its factorization.

1428644357293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 58.

The spelling of 1428644357293 in words is "one trillion, four hundred twenty-eight billion, six hundred forty-four million, three hundred fifty-seven thousand, two hundred ninety-three".