100000161 has 12 divisors (see below), whose sum is σ = 147518592. Its totient is φ = 65248056.

The previous prime is 100000127. The next prime is 100000193. The reversal of 100000161 is 161000001.

It is not a de Polignac number, because 100000161 - 2¹⁷ = 99869089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100000561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117781 + ... + 118626.

It is an arithmetic number, because the mean of its divisors is an integer number (12293216).

Almost surely, 2^100000161 is an apocalyptic number.

It is an amenable number.

100000161 is a deficient number, since it is larger than the sum of its proper divisors (47518431).

100000161 is a wasteful number, since it uses less digits than its factorization.

100000161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236460 (or 236457 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 100000161 is about 10000.0080499968. The cubic root of 100000161 is about 464.1591324597.

Adding to 100000161 its reverse (161000001), we get a palindrome (261000162).

The spelling of 100000161 in words is "one hundred million, one hundred sixty-one", and thus it is an aban number.