161038012 has 6 divisors (see below), whose sum is σ = 281816528. Its totient is φ = 80519004.

The previous prime is 161038001. The next prime is 161038039. The reversal of 161038012 is 210830161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20129748 + ... + 20129755.

Almost surely, 2^161038012 is an apocalyptic number.

It is an amenable number.

161038012 is a deficient number, since it is larger than the sum of its proper divisors (120778516).

161038012 is a wasteful number, since it uses less digits than its factorization.

161038012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40259507 (or 40259505 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 161038012 is about 12690.0753346858. The cubic root of 161038012 is about 544.0549928186.

Adding to 161038012 its reverse (210830161), we get a palindrome (371868173).

The spelling of 161038012 in words is "one hundred sixty-one million, thirty-eight thousand, twelve".