161797337 has 16 divisors (see below), whose sum is σ = 179773440. Its totient is φ = 144649152.

The previous prime is 161797319. The next prime is 161797343. The reversal of 161797337 is 733797161.

161797337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161797337 - 2²⁰ = 160748761 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161797367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125864 + ... + 127142.

It is an arithmetic number, because the mean of its divisors is an integer number (11235840).

Almost surely, 2^161797337 is an apocalyptic number.

It is an amenable number.

161797337 is a deficient number, since it is larger than the sum of its proper divisors (17976103).

161797337 is a wasteful number, since it uses less digits than its factorization.

161797337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592.

The product of its digits is 166698, while the sum is 44.

The square root of 161797337 is about 12719.9582153402. The cubic root of 161797337 is about 544.9087600817.

The spelling of 161797337 in words is "one hundred sixty-one million, seven hundred ninety-seven thousand, three hundred thirty-seven".