165151612 has 6 divisors (see below), whose sum is σ = 289015328. Its totient is φ = 82575804.

The previous prime is 165151579. The next prime is 165151619. The reversal of 165151612 is 216151561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165151619) 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, 20643948 + ... + 20643955.

Almost surely, 2^165151612 is an apocalyptic number.

It is an amenable number.

165151612 is a deficient number, since it is larger than the sum of its proper divisors (123863716).

165151612 is a wasteful number, since it uses less digits than its factorization.

165151612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41287907 (or 41287905 counting only the distinct ones).

The product of its digits is 1800, while the sum is 28.

The square root of 165151612 is about 12851.1327127223. The cubic root of 165151612 is about 548.6485962381.

The spelling of 165151612 in words is "one hundred sixty-five million, one hundred fifty-one thousand, six hundred twelve".