451381394 has 16 divisors (see below), whose sum is σ = 709136640. Its totient is φ = 215075520.

The previous prime is 451381387. The next prime is 451381397. The reversal of 451381394 is 493183154.

It is not an unprimeable number, because it can be changed into a prime (451381397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5639 + ... + 30570.

It is an arithmetic number, because the mean of its divisors is an integer number (44321040).

Almost surely, 2^451381394 is an apocalyptic number.

451381394 is a deficient number, since it is larger than the sum of its proper divisors (257755246).

451381394 is a wasteful number, since it uses less digits than its factorization.

451381394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36505.

The product of its digits is 51840, while the sum is 38.

The square root of 451381394 is about 21245.7382550007. The cubic root of 451381394 is about 767.0927612109.

The spelling of 451381394 in words is "four hundred fifty-one million, three hundred eighty-one thousand, three hundred ninety-four".