165151388 has 12 divisors (see below), whose sum is σ = 290386152. Its totient is φ = 82183920.

The previous prime is 165151319. The next prime is 165151411. The reversal of 165151388 is 883151561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96995 + ... + 98682.

It is an arithmetic number, because the mean of its divisors is an integer number (24198846).

Almost surely, 2^165151388 is an apocalyptic number.

It is an amenable number.

165151388 is a deficient number, since it is larger than the sum of its proper divisors (125234764).

165151388 is a wasteful number, since it uses less digits than its factorization.

165151388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195892 (or 195890 counting only the distinct ones).

The product of its digits is 28800, while the sum is 38.

The square root of 165151388 is about 12851.1239975342. The cubic root of 165151388 is about 548.6483481885.

The spelling of 165151388 in words is "one hundred sixty-five million, one hundred fifty-one thousand, three hundred eighty-eight".