165480377 has 4 divisors (see below), whose sum is σ = 172675200. Its totient is φ = 158285556.

The previous prime is 165480361. The next prime is 165480401. The reversal of 165480377 is 773084561.

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 165480377 - 2⁴ = 165480361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165480307) 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, 3597377 + ... + 3597422.

It is an arithmetic number, because the mean of its divisors is an integer number (43168800).

Almost surely, 2^165480377 is an apocalyptic number.

It is an amenable number.

165480377 is a deficient number, since it is larger than the sum of its proper divisors (7194823).

165480377 is an equidigital number, since it uses as much as digits as its factorization.

165480377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194822.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 165480377 is about 12863.9176381070. The cubic root of 165480377 is about 549.0124172847.

The spelling of 165480377 in words is "one hundred sixty-five million, four hundred eighty thousand, three hundred seventy-seven".