1261106083 has 2 divisors, whose sum is σ = 1261106084. Its totient is φ = 1261106082.

The previous prime is 1261106023. The next prime is 1261106117. The reversal of 1261106083 is 3806011621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1261106083 - 2²¹ = 1259008931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1261106023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630553041 + 630553042.

It is an arithmetic number, because the mean of its divisors is an integer number (630553042).

Almost surely, 2^1261106083 is an apocalyptic number.

1261106083 is a deficient number, since it is larger than the sum of its proper divisors (1).

1261106083 is an equidigital number, since it uses as much as digits as its factorization.

1261106083 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 28.

The square root of 1261106083 is about 35512.0554600828. The cubic root of 1261106083 is about 1080.3982536161.

The spelling of 1261106083 in words is "one billion, two hundred sixty-one million, one hundred six thousand, eighty-three".