1145439451389 has 4 divisors (see below), whose sum is σ = 1527252601856. Its totient is φ = 763626300924.

The previous prime is 1145439451361. The next prime is 1145439451399. The reversal of 1145439451389 is 9831549345411.

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 not a de Polignac number, because 1145439451389 - 2⁸ = 1145439451133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145439451399) 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, 190906575229 + ... + 190906575234.

It is an arithmetic number, because the mean of its divisors is an integer number (381813150464).

Almost surely, 2^{1145439451389} is an apocalyptic number.

It is an amenable number.

1145439451389 is a deficient number, since it is larger than the sum of its proper divisors (381813150467).

1145439451389 is an equidigital number, since it uses as much as digits as its factorization.

1145439451389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381813150466.

The product of its digits is 9331200, while the sum is 57.

The spelling of 1145439451389 in words is "one trillion, one hundred forty-five billion, four hundred thirty-nine million, four hundred fifty-one thousand, three hundred eighty-nine".