165358947 has 16 divisors (see below), whose sum is σ = 238775040. Its totient is φ = 101186592.

The previous prime is 165358933. The next prime is 165358961. The reversal of 165358947 is 749853561.

It is an interprime number because it is at equal distance from previous prime (165358933) and next prime (165358961).

It is not a de Polignac number, because 165358947 - 2¹² = 165354851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165358896 and 165358905.

It is not an unprimeable number, because it can be changed into a prime (165358927) 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, 4863 + ... + 18824.

It is an arithmetic number, because the mean of its divisors is an integer number (14923440).

Almost surely, 2^165358947 is an apocalyptic number.

165358947 is a deficient number, since it is larger than the sum of its proper divisors (73416093).

165358947 is a wasteful number, since it uses less digits than its factorization.

165358947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23882.

The product of its digits is 907200, while the sum is 48.

The square root of 165358947 is about 12859.1969811493. The cubic root of 165358947 is about 548.8780954345.

The spelling of 165358947 in words is "one hundred sixty-five million, three hundred fifty-eight thousand, nine hundred forty-seven".