1000651161 has 16 divisors (see below), whose sum is σ = 1423816704. Its totient is φ = 622911744.

The previous prime is 1000651159. The next prime is 1000651189. The reversal of 1000651161 is 1611560001.

It is not a de Polignac number, because 1000651161 - 2¹ = 1000651159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1000651121) 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 in 15 ways as a sum of consecutive naturals, for example, 70770 + ... + 83723.

It is an arithmetic number, because the mean of its divisors is an integer number (88988544).

Almost surely, 2^1000651161 is an apocalyptic number.

It is an amenable number.

1000651161 is a deficient number, since it is larger than the sum of its proper divisors (423165543).

1000651161 is a wasteful number, since it uses less digits than its factorization.

1000651161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154640.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 1000651161 is about 31633.0706855974. The cubic root of 1000651161 is about 1000.2170065714.

The spelling of 1000651161 in words is "one billion, six hundred fifty-one thousand, one hundred sixty-one".