1161681023 has 2 divisors, whose sum is σ = 1161681024. Its totient is φ = 1161681022.

The previous prime is 1161680969. The next prime is 1161681061. The reversal of 1161681023 is 3201861611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1161681023 - 2¹² = 1161676927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161681523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580840511 + 580840512.

It is an arithmetic number, because the mean of its divisors is an integer number (580840512).

Almost surely, 2^1161681023 is an apocalyptic number.

1161681023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161681023 is an equidigital number, since it uses as much as digits as its factorization.

1161681023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1161681023 is about 34083.4420650262. The cubic root of 1161681023 is about 1051.2248813633.

The spelling of 1161681023 in words is "one billion, one hundred sixty-one million, six hundred eighty-one thousand, twenty-three".