1170490081 has 2 divisors, whose sum is σ = 1170490082. Its totient is φ = 1170490080.

The previous prime is 1170490063. The next prime is 1170490121. The reversal of 1170490081 is 1800940711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721728225 + 448761856 = 26865^2 + 21184^2 .

It is an emirp because it is prime and its reverse (1800940711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1170490081 - 2²⁵ = 1136935649 is a prime.

It is a super-2 number, since 2×1170490081² = 2740094059438773122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1170490031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585245040 + 585245041.

It is an arithmetic number, because the mean of its divisors is an integer number (585245041).

Almost surely, 2^1170490081 is an apocalyptic number.

It is an amenable number.

1170490081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1170490081 is an equidigital number, since it uses as much as digits as its factorization.

1170490081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 1170490081 is about 34212.4258274680. The cubic root of 1170490081 is about 1053.8753484724.

The spelling of 1170490081 in words is "one billion, one hundred seventy million, four hundred ninety thousand, eighty-one".