1147761947 has 2 divisors, whose sum is σ = 1147761948. Its totient is φ = 1147761946.

The previous prime is 1147761911. The next prime is 1147761959. The reversal of 1147761947 is 7491677411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1147761947 - 2¹² = 1147757851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1147761997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573880973 + 573880974.

It is an arithmetic number, because the mean of its divisors is an integer number (573880974).

Almost surely, 2^1147761947 is an apocalyptic number.

1147761947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147761947 is an equidigital number, since it uses as much as digits as its factorization.

1147761947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 47.

The square root of 1147761947 is about 33878.6355539889. The cubic root of 1147761947 is about 1047.0094640464.

The spelling of 1147761947 in words is "one billion, one hundred forty-seven million, seven hundred sixty-one thousand, nine hundred forty-seven".