1053728393 has 4 divisors (see below), whose sum is σ = 1053959700. Its totient is φ = 1053497088.

The previous prime is 1053728383. The next prime is 1053728407. The reversal of 1053728393 is 3938273501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3938273501 = 2557 ⋅1540193.

It can be written as a sum of positive squares in 2 ways, for example, as 1044776329 + 8952064 = 32323^2 + 2992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1053728393 - 2¹⁰ = 1053727369 is a prime.

It is a super-2 number, since 2×1053728393² = 2220687052428724898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1053728393.

It is not an unprimeable number, because it can be changed into a prime (1053728383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108680 + ... + 117977.

It is an arithmetic number, because the mean of its divisors is an integer number (263489925).

Almost surely, 2^1053728393 is an apocalyptic number.

It is an amenable number.

1053728393 is a deficient number, since it is larger than the sum of its proper divisors (231307).

1053728393 is an equidigital number, since it uses as much as digits as its factorization.

1053728393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231306.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 1053728393 is about 32461.1828650775. The cubic root of 1053728393 is about 1017.5979595271.

The spelling of 1053728393 in words is "one billion, fifty-three million, seven hundred twenty-eight thousand, three hundred ninety-three".