1163220673 has 2 divisors, whose sum is σ = 1163220674. Its totient is φ = 1163220672.

The previous prime is 1163220637. The next prime is 1163220683. The reversal of 1163220673 is 3760223611.

Together with previous prime (1163220637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 753886849 + 409333824 = 27457^2 + 20232^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163220673 - 2¹⁷ = 1163089601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1163220613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581610336 + 581610337.

It is an arithmetic number, because the mean of its divisors is an integer number (581610337).

Almost surely, 2^1163220673 is an apocalyptic number.

It is an amenable number.

1163220673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163220673 is an equidigital number, since it uses as much as digits as its factorization.

1163220673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 1163220673 is about 34106.0210666680. The cubic root of 1163220673 is about 1051.6890948151.

The spelling of 1163220673 in words is "one billion, one hundred sixty-three million, two hundred twenty thousand, six hundred seventy-three".