1001633161 has 2 divisors, whose sum is σ = 1001633162. Its totient is φ = 1001633160.

The previous prime is 1001633123. The next prime is 1001633201. The reversal of 1001633161 is 1613361001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 563777536 + 437855625 = 23744^2 + 20925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001633161 - 2²¹ = 999536009 is a prime.

It is a super-3 number, since 3×1001633161³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1001633461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500816580 + 500816581.

It is an arithmetic number, because the mean of its divisors is an integer number (500816581).

Almost surely, 2^1001633161 is an apocalyptic number.

It is an amenable number.

1001633161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001633161 is an equidigital number, since it uses as much as digits as its factorization.

1001633161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1001633161 is about 31648.5886099207. The cubic root of 1001633161 is about 1000.5440909114.

Adding to 1001633161 its reverse (1613361001), we get a palindrome (2614994162).

The spelling of 1001633161 in words is "one billion, one million, six hundred thirty-three thousand, one hundred sixty-one".