1428949548693 has 20 divisors (see below), whose sum is σ = 2135852890380. Its totient is φ = 952075518912.

The previous prime is 1428949548671. The next prime is 1428949548703. The reversal of 1428949548693 is 3968459498241.

1428949548693 is a `hidden beast` number, since 1 + 4 + 2 + 8 + 9 + 495 + 48 + 6 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 439167313809 + 989782234884 = 662697^2 + 994878^2 .

It is not a de Polignac number, because 1428949548693 - 2⁸ = 1428949548437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428949548613) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5022880 + ... + 5299737.

It is an arithmetic number, because the mean of its divisors is an integer number (106792644519).

Almost surely, 2^{1428949548693} is an apocalyptic number.

It is an amenable number.

1428949548693 is a deficient number, since it is larger than the sum of its proper divisors (706903341687).

1428949548693 is a wasteful number, since it uses less digits than its factorization.

1428949548693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324338 (or 10324329 counting only the distinct ones).

The product of its digits is 537477120, while the sum is 72.

The spelling of 1428949548693 in words is "one trillion, four hundred twenty-eight billion, nine hundred forty-nine million, five hundred forty-eight thousand, six hundred ninety-three".