1163990473 has 2 divisors, whose sum is σ = 1163990474. Its totient is φ = 1163990472.

The previous prime is 1163990461. The next prime is 1163990479. The reversal of 1163990473 is 3740993611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1082936464 + 81054009 = 32908^2 + 9003^2 .

It is an emirp because it is prime and its reverse (3740993611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1163990473 - 2⁵ = 1163990441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1163990479) by changing a digit.

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 as a sum of consecutive naturals, namely, 581995236 + 581995237.

It is an arithmetic number, because the mean of its divisors is an integer number (581995237).

Almost surely, 2^1163990473 is an apocalyptic number.

It is an amenable number.

1163990473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163990473 is an equidigital number, since it uses as much as digits as its factorization.

1163990473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 1163990473 is about 34117.3045975206. The cubic root of 1163990473 is about 1051.9210404119.

The spelling of 1163990473 in words is "one billion, one hundred sixty-three million, nine hundred ninety thousand, four hundred seventy-three".