161838373 has 8 divisors (see below), whose sum is σ = 171014400. Its totient is φ = 152840688.

The previous prime is 161838319. The next prime is 161838403. The reversal of 161838373 is 373838161.

161838373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-161838373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161838773) 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, 42718 + ... + 46351.

It is an arithmetic number, because the mean of its divisors is an integer number (21376800).

Almost surely, 2^161838373 is an apocalyptic number.

It is an amenable number.

161838373 is a deficient number, since it is larger than the sum of its proper divisors (9176027).

161838373 is an equidigital number, since it uses as much as digits as its factorization.

161838373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89171.

The product of its digits is 72576, while the sum is 40.

The square root of 161838373 is about 12721.5711686882. The cubic root of 161838373 is about 544.9548238512.

The spelling of 161838373 in words is "one hundred sixty-one million, eight hundred thirty-eight thousand, three hundred seventy-three".