1001105156 has 24 divisors (see below), whose sum is σ = 1808247840. Its totient is φ = 484716672.

The previous prime is 1001105141. The next prime is 1001105177. The reversal of 1001105156 is 6515011001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15845 + ... + 47468.

It is an arithmetic number, because the mean of its divisors is an integer number (75343660).

Almost surely, 2^1001105156 is an apocalyptic number.

It is an amenable number.

1001105156 is a deficient number, since it is larger than the sum of its proper divisors (807142684).

1001105156 is a wasteful number, since it uses less digits than its factorization.

1001105156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63443 (or 63441 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1001105156 is about 31640.2458271108. The cubic root of 1001105156 is about 1000.3682497088.

Adding to 1001105156 its reverse (6515011001), we get a palindrome (7516116157).

The spelling of 1001105156 in words is "one billion, one million, one hundred five thousand, one hundred fifty-six".