1081387106 has 16 divisors (see below), whose sum is σ = 1652863704. Its totient is φ = 530509824.

The previous prime is 1081387081. The next prime is 1081387117. The reversal of 1081387106 is 6017831801.

It can be written as a sum of positive squares in 4 ways, for example, as 450925225 + 630461881 = 21235^2 + 25109^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8990 + ... + 47366.

Almost surely, 2^1081387106 is an apocalyptic number.

1081387106 is a deficient number, since it is larger than the sum of its proper divisors (571476598).

1081387106 is a wasteful number, since it uses less digits than its factorization.

1081387106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38645.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1081387106 is about 32884.4508240597. The cubic root of 1081387106 is about 1026.4246241460.

The spelling of 1081387106 in words is "one billion, eighty-one million, three hundred eighty-seven thousand, one hundred six".