1143898269 has 4 divisors (see below), whose sum is σ = 1525197696. Its totient is φ = 762598844.

The previous prime is 1143898219. The next prime is 1143898297. The reversal of 1143898269 is 9628983411.

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.

It is a cyclic number.

It is not a de Polignac number, because 1143898269 - 2⁸ = 1143898013 is a prime.

It is a super-2 number, since 2×1143898269² = 2617006499642392722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143898219) 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, 190649709 + ... + 190649714.

It is an arithmetic number, because the mean of its divisors is an integer number (381299424).

Almost surely, 2^1143898269 is an apocalyptic number.

It is an amenable number.

1143898269 is a deficient number, since it is larger than the sum of its proper divisors (381299427).

1143898269 is an equidigital number, since it uses as much as digits as its factorization.

1143898269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381299426.

The product of its digits is 746496, while the sum is 51.

The square root of 1143898269 is about 33821.5651471070. The cubic root of 1143898269 is about 1045.8333040273.

The spelling of 1143898269 in words is "one billion, one hundred forty-three million, eight hundred ninety-eight thousand, two hundred sixty-nine".