1145447509 has 8 divisors (see below), whose sum is σ = 1207713440. Its totient is φ = 1083379536.

The previous prime is 1145447507. The next prime is 1145447617. The reversal of 1145447509 is 9057445411.

It is a happy number.

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 1145447509 - 2¹ = 1145447507 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 (1145447507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37527 + ... + 60820.

It is an arithmetic number, because the mean of its divisors is an integer number (150964180).

Almost surely, 2^1145447509 is an apocalyptic number.

1145447509 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1145447509 is a deficient number, since it is larger than the sum of its proper divisors (62265931).

1145447509 is an equidigital number, since it uses as much as digits as its factorization.

1145447509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98979.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 1145447509 is about 33844.4605364009. The cubic root of 1145447509 is about 1046.3052329043.

The spelling of 1145447509 in words is "one billion, one hundred forty-five million, four hundred forty-seven thousand, five hundred nine".