451071609 has 16 divisors (see below), whose sum is σ = 634620480. Its totient is φ = 284195520.

The previous prime is 451071589. The next prime is 451071611. The reversal of 451071609 is 906170154.

It is not a de Polignac number, because 451071609 - 2²⁷ = 316853881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 451071609.

It is not an unprimeable number, because it can be changed into a prime (451071619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14599 + ... + 33395.

It is an arithmetic number, because the mean of its divisors is an integer number (39663780).

Almost surely, 2^451071609 is an apocalyptic number.

It is an amenable number.

451071609 is a deficient number, since it is larger than the sum of its proper divisors (183548871).

451071609 is a wasteful number, since it uses less digits than its factorization.

451071609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19240.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 451071609 is about 21238.4464827350. The cubic root of 451071609 is about 766.9172346916.

The spelling of 451071609 in words is "four hundred fifty-one million, seventy-one thousand, six hundred nine".