1156001006 has 16 divisors (see below), whose sum is σ = 1748718720. Its totient is φ = 573105720.

The previous prime is 1156000997. The next prime is 1156001023. The reversal of 1156001006 is 6001006511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 261071 + ... + 265461.

It is an arithmetic number, because the mean of its divisors is an integer number (109294920).

Almost surely, 2^1156001006 is an apocalyptic number.

1156001006 is a deficient number, since it is larger than the sum of its proper divisors (592717714).

1156001006 is a wasteful number, since it uses less digits than its factorization.

1156001006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5479.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1156001006 is about 34000.0147941144. The cubic root of 1156001006 is about 1049.5087667397.

Adding to 1156001006 its reverse (6001006511), we get a palindrome (7157007517).

The spelling of 1156001006 in words is "one billion, one hundred fifty-six million, one thousand, six".