1001151161 has 8 divisors (see below), whose sum is σ = 1026148200. Its totient is φ = 976181760.

The previous prime is 1001151149. The next prime is 1001151167. The reversal of 1001151161 is 1611511001.

It can be written as a sum of positive squares in 4 ways, for example, as 389825536 + 611325625 = 19744^2 + 24725^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001151161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001151167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79805 + ... + 91493.

It is an arithmetic number, because the mean of its divisors is an integer number (128268525).

Almost surely, 2^1001151161 is an apocalyptic number.

It is an amenable number.

1001151161 is a deficient number, since it is larger than the sum of its proper divisors (24997039).

1001151161 is a wasteful number, since it uses less digits than its factorization.

1001151161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13819.

The product of its (nonzero) digits is 30, while the sum is 17.

The square root of 1001151161 is about 31640.9728200635. The cubic root of 1001151161 is about 1000.3835731861.

Adding to 1001151161 its reverse (1611511001), we get a palindrome (2612662162).

The spelling of 1001151161 in words is "one billion, one million, one hundred fifty-one thousand, one hundred sixty-one".