1145891369 has 8 divisors (see below), whose sum is σ = 1344984768. Its totient is φ = 955646640.

The previous prime is 1145891267. The next prime is 1145891371. The reversal of 1145891369 is 9631985411.

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 1145891369 - 2⁸ = 1145891113 is a prime.

It is a super-2 number, since 2×1145891369² = 2626134059097388322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145891389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2211887 + ... + 2212404.

It is an arithmetic number, because the mean of its divisors is an integer number (168123096).

Almost surely, 2^1145891369 is an apocalyptic number.

It is an amenable number.

1145891369 is a deficient number, since it is larger than the sum of its proper divisors (199093399).

1145891369 is an equidigital number, since it uses as much as digits as its factorization.

1145891369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4424335.

The product of its digits is 233280, while the sum is 47.

The square root of 1145891369 is about 33851.0172520709. The cubic root of 1145891369 is about 1046.4403629338.

The spelling of 1145891369 in words is "one billion, one hundred forty-five million, eight hundred ninety-one thousand, three hundred sixty-nine".