1253988769 has 8 divisors (see below), whose sum is σ = 1370522880. Its totient is φ = 1137877200.

The previous prime is 1253988763. The next prime is 1253988787. The reversal of 1253988769 is 9678893521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1253988769 - 2¹⁵ = 1253956001 is a prime.

It is a super-2 number, since 2×1253988769² = 3144975665556270722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253988763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99409 + ... + 111310.

It is an arithmetic number, because the mean of its divisors is an integer number (171315360).

Almost surely, 2^1253988769 is an apocalyptic number.

It is an amenable number.

1253988769 is a deficient number, since it is larger than the sum of its proper divisors (116534111).

1253988769 is a wasteful number, since it uses less digits than its factorization.

1253988769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211271.

The product of its digits is 6531840, while the sum is 58.

The square root of 1253988769 is about 35411.7038420915. The cubic root of 1253988769 is about 1078.3619340514.

The spelling of 1253988769 in words is "one billion, two hundred fifty-three million, nine hundred eighty-eight thousand, seven hundred sixty-nine".