1253329769 has 4 divisors (see below), whose sum is σ = 1255556496. Its totient is φ = 1251103044.

The previous prime is 1253329757. The next prime is 1253329807. The reversal of 1253329769 is 9679233521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9679233521 = 10949 ⋅884029.

It is a cyclic number.

It is not a de Polignac number, because 1253329769 - 2⁸ = 1253329513 is a prime.

It is a super-2 number, since 2×1253329769² = 3141671019723186722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253379769) 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, 1112519 + ... + 1113644.

It is an arithmetic number, because the mean of its divisors is an integer number (313889124).

Almost surely, 2^1253329769 is an apocalyptic number.

It is an amenable number.

1253329769 is a deficient number, since it is larger than the sum of its proper divisors (2226727).

1253329769 is an equidigital number, since it uses as much as digits as its factorization.

1253329769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226726.

The product of its digits is 612360, while the sum is 47.

The square root of 1253329769 is about 35402.3977860257. The cubic root of 1253329769 is about 1078.1729996010.

The spelling of 1253329769 in words is "one billion, two hundred fifty-three million, three hundred twenty-nine thousand, seven hundred sixty-nine".