165490073 has 16 divisors (see below), whose sum is σ = 191600640. Its totient is φ = 140010000.

The previous prime is 165490033. The next prime is 165490079. The reversal of 165490073 is 370094561.

It is a cyclic number.

It is not a de Polignac number, because 165490073 - 2²⁴ = 148712857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165490079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229808 + ... + 230526.

It is an arithmetic number, because the mean of its divisors is an integer number (11975040).

Almost surely, 2^165490073 is an apocalyptic number.

It is an amenable number.

165490073 is a deficient number, since it is larger than the sum of its proper divisors (26110567).

165490073 is a wasteful number, since it uses less digits than its factorization.

165490073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 165490073 is about 12864.2945006712. The cubic root of 165490073 is about 549.0231398459.

The spelling of 165490073 in words is "one hundred sixty-five million, four hundred ninety thousand, seventy-three".