1090600081 has 2 divisors, whose sum is σ = 1090600082. Its totient is φ = 1090600080.

The previous prime is 1090600061. The next prime is 1090600087. The reversal of 1090600081 is 1800060901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1021377681 + 69222400 = 31959^2 + 8320^2 .

It is an emirp because it is prime and its reverse (1800060901) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1800090601 and 1060900081.

It is a cyclic number.

It is not a de Polignac number, because 1090600081 - 2¹³ = 1090591889 is a prime.

It is a super-2 number, since 2×1090600081² = 2378817073354413122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1090600087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545300040 + 545300041.

It is an arithmetic number, because the mean of its divisors is an integer number (545300041).

Almost surely, 2^1090600081 is an apocalyptic number.

It is an amenable number.

1090600081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090600081 is an equidigital number, since it uses as much as digits as its factorization.

1090600081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1090600081 is about 33024.2347526782. The cubic root of 1090600081 is about 1029.3312908970.

Adding to 1090600081 its reverse (1800060901), we get a palindrome (2890660982).

The spelling of 1090600081 in words is "one billion, ninety million, six hundred thousand, eighty-one".