165361736 has 8 divisors (see below), whose sum is σ = 310053270. Its totient is φ = 82680864.

The previous prime is 165361723. The next prime is 165361739. The reversal of 165361736 is 637163561.

It can be written as a sum of positive squares in only one way, i.e., 146264836 + 19096900 = 12094^2 + 4370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 165361736.

It is not an unprimeable number, because it can be changed into a prime (165361739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10335101 + ... + 10335116.

Almost surely, 2^165361736 is an apocalyptic number.

It is an amenable number.

165361736 is a deficient number, since it is larger than the sum of its proper divisors (144691534).

165361736 is a wasteful number, since it uses less digits than its factorization.

165361736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20670223 (or 20670219 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 165361736 is about 12859.3054244776. The cubic root of 165361736 is about 548.8811812718.

The spelling of 165361736 in words is "one hundred sixty-five million, three hundred sixty-one thousand, seven hundred thirty-six".