1301000161 has 4 divisors (see below), whose sum is σ = 1301443092. Its totient is φ = 1300557232.

The previous prime is 1301000147. The next prime is 1301000177. The reversal of 1301000161 is 1610001031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 368064225 + 932935936 = 19185^2 + 30544^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301000161 - 2¹¹ = 1300998113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301000101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217030 + ... + 222943.

It is an arithmetic number, because the mean of its divisors is an integer number (325360773).

Almost surely, 2^1301000161 is an apocalyptic number.

It is an amenable number.

1301000161 is a deficient number, since it is larger than the sum of its proper divisors (442931).

1301000161 is an equidigital number, since it uses as much as digits as its factorization.

1301000161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442930.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1301000161 is about 36069.3798255529. The cubic root of 1301000161 is about 1091.6727006976.

Adding to 1301000161 its reverse (1610001031), we get a palindrome (2911001192).

The spelling of 1301000161 in words is "one billion, three hundred one million, one hundred sixty-one", and thus it is an aban number.