165938347 has 4 divisors (see below), whose sum is σ = 165993880. Its totient is φ = 165882816.

The previous prime is 165938329. The next prime is 165938363. The reversal of 165938347 is 743839561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743839561 = 67 ⋅11102083.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165938347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165938297 and 165938306.

It is not an unprimeable number, because it can be changed into a prime (165933347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23013 + ... + 29350.

It is an arithmetic number, because the mean of its divisors is an integer number (41498470).

Almost surely, 2^165938347 is an apocalyptic number.

165938347 is a deficient number, since it is larger than the sum of its proper divisors (55533).

165938347 is an equidigital number, since it uses as much as digits as its factorization.

165938347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55532.

The product of its digits is 544320, while the sum is 46.

The square root of 165938347 is about 12881.7059041107. The cubic root of 165938347 is about 549.5184181178.

The spelling of 165938347 in words is "one hundred sixty-five million, nine hundred thirty-eight thousand, three hundred forty-seven".