1928385253 has 4 divisors (see below), whose sum is σ = 1959998188. Its totient is φ = 1896772320.

The previous prime is 1928385241. The next prime is 1928385269. The reversal of 1928385253 is 3525838291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3525838291 = 23 ⋅153297317.

It can be written as a sum of positive squares in 2 ways, for example, as 41177889 + 1887207364 = 6417^2 + 43442^2 .

It is a cyclic number.

It is not a de Polignac number, because 1928385253 - 2²¹ = 1926288101 is a prime.

It is a super-3 number, since 3×1928385253³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928385233) 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 in 3 ways as a sum of consecutive naturals, for example, 15806376 + ... + 15806497.

It is an arithmetic number, because the mean of its divisors is an integer number (489999547).

Almost surely, 2^1928385253 is an apocalyptic number.

It is an amenable number.

1928385253 is a deficient number, since it is larger than the sum of its proper divisors (31612935).

1928385253 is an equidigital number, since it uses as much as digits as its factorization.

1928385253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31612934.

The product of its digits is 518400, while the sum is 46.

The square root of 1928385253 is about 43913.3835293980. The cubic root of 1928385253 is about 1244.6997449085.

The spelling of 1928385253 in words is "one billion, nine hundred twenty-eight million, three hundred eighty-five thousand, two hundred fifty-three".