161038837 has 8 divisors (see below), whose sum is σ = 165562200. Its totient is φ = 156524544.

The previous prime is 161038817. The next prime is 161038849. The reversal of 161038837 is 738830161.

161038837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 41486481 + 119552356 = 6441^2 + 10934^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161038837 - 2¹¹ = 161036789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161038796 and 161038805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161038817) 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, 50589 + ... + 53677.

It is an arithmetic number, because the mean of its divisors is an integer number (20695275).

Almost surely, 2^161038837 is an apocalyptic number.

It is an amenable number.

161038837 is a deficient number, since it is larger than the sum of its proper divisors (4523363).

161038837 is a wasteful number, since it uses less digits than its factorization.

161038837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 161038837 is about 12690.1078403613. The cubic root of 161038837 is about 544.0559218842.

Adding to 161038837 its reverse (738830161), we get a palindrome (899868998).

The spelling of 161038837 in words is "one hundred sixty-one million, thirty-eight thousand, eight hundred thirty-seven".