165745454 has 16 divisors (see below), whose sum is σ = 284328576. Its totient is φ = 70985400.

The previous prime is 165745441. The next prime is 165745487. The reversal of 165745454 is 454547561.

It is a super-2 number, since 2×165745454² = 54943111043332232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23969 + ... + 30099.

It is an arithmetic number, because the mean of its divisors is an integer number (17770536).

Almost surely, 2^165745454 is an apocalyptic number.

165745454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

165745454 is a deficient number, since it is larger than the sum of its proper divisors (118583122).

165745454 is a wasteful number, since it uses less digits than its factorization.

165745454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8071.

The product of its digits is 336000, while the sum is 41.

The square root of 165745454 is about 12874.2166363628. The cubic root of 165745454 is about 549.3054085737.

The spelling of 165745454 in words is "one hundred sixty-five million, seven hundred forty-five thousand, four hundred fifty-four".