451891436 has 6 divisors (see below), whose sum is σ = 790810020. Its totient is φ = 225945716.

The previous prime is 451891423. The next prime is 451891441. The reversal of 451891436 is 634198154.

It is a junction number, because it is equal to n+sod(n) for n = 451891393 and 451891402.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 56486426 + ... + 56486433.

It is an arithmetic number, because the mean of its divisors is an integer number (131801670).

Almost surely, 2^451891436 is an apocalyptic number.

It is an amenable number.

451891436 is a deficient number, since it is larger than the sum of its proper divisors (338918584).

451891436 is a wasteful number, since it uses less digits than its factorization.

451891436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112972863 (or 112972861 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 451891436 is about 21257.7382616308. The cubic root of 451891436 is about 767.3815799781.

The spelling of 451891436 in words is "four hundred fifty-one million, eight hundred ninety-one thousand, four hundred thirty-six".