1238100161 has 8 divisors (see below), whose sum is σ = 1310580480. Its totient is φ = 1167605712.

The previous prime is 1238100139. The next prime is 1238100163. The reversal of 1238100161 is 1610018321.

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-1238100161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1238100163) 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, 495185 + ... + 497678.

It is an arithmetic number, because the mean of its divisors is an integer number (163822560).

Almost surely, 2^1238100161 is an apocalyptic number.

It is an amenable number.

1238100161 is a deficient number, since it is larger than the sum of its proper divisors (72480319).

1238100161 is an equidigital number, since it uses as much as digits as its factorization.

1238100161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992935.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1238100161 is about 35186.6474816798. The cubic root of 1238100161 is about 1073.7881164870.

Adding to 1238100161 its reverse (1610018321), we get a palindrome (2848118482).

The spelling of 1238100161 in words is "one billion, two hundred thirty-eight million, one hundred thousand, one hundred sixty-one".