165790473 has 4 divisors (see below), whose sum is σ = 221053968. Its totient is φ = 110526980.

The previous prime is 165790453. The next prime is 165790481. The reversal of 165790473 is 374097561.

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, and also an emirpimes, since its reverse is a distinct semiprime: 374097561 = 3 ⋅124699187.

It is a cyclic number.

It is not a de Polignac number, because 165790473 - 2¹² = 165786377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165790403) 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, 27631743 + ... + 27631748.

It is an arithmetic number, because the mean of its divisors is an integer number (55263492).

Almost surely, 2^165790473 is an apocalyptic number.

It is an amenable number.

165790473 is a deficient number, since it is larger than the sum of its proper divisors (55263495).

165790473 is an equidigital number, since it uses as much as digits as its factorization.

165790473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55263494.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 165790473 is about 12875.9649347146. The cubic root of 165790473 is about 549.3551373214.

The spelling of 165790473 in words is "one hundred sixty-five million, seven hundred ninety thousand, four hundred seventy-three".