165147405 has 8 divisors (see below), whose sum is σ = 264235872. Its totient is φ = 88078608.

The previous prime is 165147403. The next prime is 165147407. The reversal of 165147405 is 504741561.

It is an interprime number because it is at equal distance from previous prime (165147403) and next prime (165147407).

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

It is not a de Polignac number, because 165147405 - 2¹ = 165147403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165147403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5504899 + ... + 5504928.

It is an arithmetic number, because the mean of its divisors is an integer number (33029484).

Almost surely, 2^165147405 is an apocalyptic number.

165147405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165147405 is a deficient number, since it is larger than the sum of its proper divisors (99088467).

165147405 is a wasteful number, since it uses less digits than its factorization.

165147405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11009835.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 165147405 is about 12850.9690296102. The cubic root of 165147405 is about 548.6439375203.

Adding to 165147405 its reverse (504741561), we get a palindrome (669888966).

It can be divided in two parts, 165 and 147405, that multiplied together give a triangular number (24321825 = T₆₉₇₄).

The spelling of 165147405 in words is "one hundred sixty-five million, one hundred forty-seven thousand, four hundred five".