1147281394 has 12 divisors (see below), whose sum is σ = 2001889134. Its totient is φ = 491691984.

The previous prime is 1147281379. The next prime is 1147281433. The reversal of 1147281394 is 4931827411.

It can be written as a sum of positive squares in only one way, i.e., 929335225 + 217946169 = 30485^2 + 14763^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5853379 + ... + 5853574.

Almost surely, 2^1147281394 is an apocalyptic number.

1147281394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1147281394 is a deficient number, since it is larger than the sum of its proper divisors (854607740).

1147281394 is a wasteful number, since it uses less digits than its factorization.

1147281394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11706969 (or 11706962 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 1147281394 is about 33871.5425394239. The cubic root of 1147281394 is about 1046.8633205665.

The spelling of 1147281394 in words is "one billion, one hundred forty-seven million, two hundred eighty-one thousand, three hundred ninety-four".