1145459287 has 8 divisors (see below), whose sum is σ = 1315302272. Its totient is φ = 977167800.

The previous prime is 1145459261. The next prime is 1145459321. The reversal of 1145459287 is 7829545411.

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

It is not a de Polignac number, because 1145459287 - 2²³ = 1137070679 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 (1145459257) 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, 386289 + ... + 389242.

It is an arithmetic number, because the mean of its divisors is an integer number (164412784).

Almost surely, 2^1145459287 is an apocalyptic number.

1145459287 is a deficient number, since it is larger than the sum of its proper divisors (169842985).

1145459287 is an equidigital number, since it uses as much as digits as its factorization.

1145459287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775749.

The product of its digits is 403200, while the sum is 46.

The square root of 1145459287 is about 33844.6345378407. The cubic root of 1145459287 is about 1046.3088190838.

The spelling of 1145459287 in words is "one billion, one hundred forty-five million, four hundred fifty-nine thousand, two hundred eighty-seven".