165739946 has 16 divisors (see below), whose sum is σ = 258570240. Its totient is φ = 79606800.

The previous prime is 165739943. The next prime is 165739949. The reversal of 165739946 is 649937561.

It is an interprime number because it is at equal distance from previous prime (165739943) and next prime (165739949).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 165739894 and 165739903.

It is not an unprimeable number, because it can be changed into a prime (165739943) 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, 8330 + ... + 20021.

It is an arithmetic number, because the mean of its divisors is an integer number (16160640).

Almost surely, 2^165739946 is an apocalyptic number.

165739946 is a deficient number, since it is larger than the sum of its proper divisors (92830294).

165739946 is a wasteful number, since it uses less digits than its factorization.

165739946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28469.

The product of its digits is 1224720, while the sum is 50.

The square root of 165739946 is about 12874.0027186575. The cubic root of 165739946 is about 549.2993237257.

The spelling of 165739946 in words is "one hundred sixty-five million, seven hundred thirty-nine thousand, nine hundred forty-six".