1090806281 has 2 divisors, whose sum is σ = 1090806282. Its totient is φ = 1090806280.

The previous prime is 1090806229. The next prime is 1090806317. The reversal of 1090806281 is 1826080901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972192400 + 118613881 = 31180^2 + 10891^2 .

It is a cyclic number.

It is not a de Polignac number, because 1090806281 - 2⁶ = 1090806217 is a prime.

It is a super-2 number, since 2×1090806281² = 2379716685338101922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1090806881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545403140 + 545403141.

It is an arithmetic number, because the mean of its divisors is an integer number (545403141).

Almost surely, 2^1090806281 is an apocalyptic number.

It is an amenable number.

1090806281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090806281 is an equidigital number, since it uses as much as digits as its factorization.

1090806281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 1090806281 is about 33027.3565548319. The cubic root of 1090806281 is about 1029.3961587744.

The spelling of 1090806281 in words is "one billion, ninety million, eight hundred six thousand, two hundred eighty-one".