165580148 has 6 divisors (see below), whose sum is σ = 289765266. Its totient is φ = 82790072.

The previous prime is 165580147. The next prime is 165580157. The reversal of 165580148 is 841085561.

It can be written as a sum of positive squares in only one way, i.e., 137405284 + 28174864 = 11722^2 + 5308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165580147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20697515 + ... + 20697522.

It is an arithmetic number, because the mean of its divisors is an integer number (48294211).

Almost surely, 2^165580148 is an apocalyptic number.

It is an amenable number.

165580148 is a deficient number, since it is larger than the sum of its proper divisors (124185118).

165580148 is a wasteful number, since it uses less digits than its factorization.

165580148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41395041 (or 41395039 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 165580148 is about 12867.7949937042. The cubic root of 165580148 is about 549.1227314987.

The spelling of 165580148 in words is "one hundred sixty-five million, five hundred eighty thousand, one hundred forty-eight".