1147380505 has 24 divisors (see below), whose sum is σ = 1440880920. Its totient is φ = 877115904.

The previous prime is 1147380467. The next prime is 1147380511. The reversal of 1147380505 is 5050837411.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 671224464 + 476156041 = 25908^2 + 21821^2 .

It is not a de Polignac number, because 1147380505 - 2¹¹ = 1147378457 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 11828617 + ... + 11828713.

It is an arithmetic number, because the mean of its divisors is an integer number (60036705).

Almost surely, 2^1147380505 is an apocalyptic number.

It is an amenable number.

1147380505 is a deficient number, since it is larger than the sum of its proper divisors (293500415).

1147380505 is an frugal number, since it uses more digits than its factorization.

1147380505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1147380505 is about 33873.0055501427. The cubic root of 1147380505 is about 1046.8934650697.

The spelling of 1147380505 in words is "one billion, one hundred forty-seven million, three hundred eighty thousand, five hundred five".