451384813 has 6 divisors (see below), whose sum is σ = 496150382. Its totient is φ = 410349720.

The previous prime is 451384807. The next prime is 451384819. The reversal of 451384813 is 318483154.

It is an interprime number because it is at equal distance from previous prime (451384807) and next prime (451384819).

It can be written as a sum of positive squares in only one way, i.e., 326235844 + 125148969 = 18062^2 + 11187^2 .

It is not a de Polignac number, because 451384813 - 2⁹ = 451384301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451384819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1865106 + ... + 1865347.

Almost surely, 2^451384813 is an apocalyptic number.

It is an amenable number.

451384813 is a deficient number, since it is larger than the sum of its proper divisors (44765569).

451384813 is a wasteful number, since it uses less digits than its factorization.

451384813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730475 (or 3730464 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 451384813 is about 21245.8187180443. The cubic root of 451384813 is about 767.0946979939.

The spelling of 451384813 in words is "four hundred fifty-one million, three hundred eighty-four thousand, eight hundred thirteen".