165330454 has 4 divisors (see below), whose sum is σ = 247995684. Its totient is φ = 82665226.

The previous prime is 165330433. The next prime is 165330461. The reversal of 165330454 is 454033561.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×165330454² = 54668318039692232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41332612 + ... + 41332615.

It is an arithmetic number, because the mean of its divisors is an integer number (61998921).

Almost surely, 2^165330454 is an apocalyptic number.

165330454 is a deficient number, since it is larger than the sum of its proper divisors (82665230).

165330454 is an equidigital number, since it uses as much as digits as its factorization.

165330454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82665229.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 165330454 is about 12858.0890493106. The cubic root of 165330454 is about 548.8465678956.

The spelling of 165330454 in words is "one hundred sixty-five million, three hundred thirty thousand, four hundred fifty-four".