1129947506 has 4 divisors (see below), whose sum is σ = 1694921262. Its totient is φ = 564973752.

The previous prime is 1129947493. The next prime is 1129947523. The reversal of 1129947506 is 6057499211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1034201281 + 95746225 = 32159^2 + 9785^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282486875 + ... + 282486878.

Almost surely, 2^1129947506 is an apocalyptic number.

1129947506 is a deficient number, since it is larger than the sum of its proper divisors (564973756).

1129947506 is an equidigital number, since it uses as much as digits as its factorization.

1129947506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564973755.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 1129947506 is about 33614.6918177157. The cubic root of 1129947506 is about 1041.5643082298.

The spelling of 1129947506 in words is "one billion, one hundred twenty-nine million, nine hundred forty-seven thousand, five hundred six".