165202493 has 4 divisors (see below), whose sum is σ = 165355008. Its totient is φ = 165049980.

The previous prime is 165202487. The next prime is 165202507. The reversal of 165202493 is 394202561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165202493 - 2⁸ = 165202237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165202463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74621 + ... + 76802.

It is an arithmetic number, because the mean of its divisors is an integer number (41338752).

Almost surely, 2^165202493 is an apocalyptic number.

It is an amenable number.

165202493 is a deficient number, since it is larger than the sum of its proper divisors (152515).

165202493 is a wasteful number, since it uses less digits than its factorization.

165202493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152514.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 165202493 is about 12853.1121912166. The cubic root of 165202493 is about 548.7049342145.

The spelling of 165202493 in words is "one hundred sixty-five million, two hundred two thousand, four hundred ninety-three".