1101090857 has 2 divisors, whose sum is σ = 1101090858. Its totient is φ = 1101090856.

The previous prime is 1101090841. The next prime is 1101090911. The reversal of 1101090857 is 7580901011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 722749456 + 378341401 = 26884^2 + 19451^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101090857 - 2⁴ = 1101090841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101090827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550545428 + 550545429.

It is an arithmetic number, because the mean of its divisors is an integer number (550545429).

Almost surely, 2^1101090857 is an apocalyptic number.

It is an amenable number.

1101090857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101090857 is an equidigital number, since it uses as much as digits as its factorization.

1101090857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 1101090857 is about 33182.6891164655. The cubic root of 1101090857 is about 1032.6212360497.

Adding to 1101090857 its reverse (7580901011), we get a palindrome (8681991868).

The spelling of 1101090857 in words is "one billion, one hundred one million, ninety thousand, eight hundred fifty-seven".