445418638 has 8 divisors (see below), whose sum is σ = 763574832. Its totient is φ = 190893696.

The previous prime is 445418599. The next prime is 445418651. The reversal of 445418638 is 836814544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 445418594 and 445418603.

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 3 ways as a sum of consecutive naturals, for example, 15907795 + ... + 15907822.

It is an arithmetic number, because the mean of its divisors is an integer number (95446854).

Almost surely, 2^445418638 is an apocalyptic number.

445418638 is a deficient number, since it is larger than the sum of its proper divisors (318156194).

445418638 is a wasteful number, since it uses less digits than its factorization.

445418638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31815626.

The product of its digits is 368640, while the sum is 43.

The square root of 445418638 is about 21104.9434493438. The cubic root of 445418638 is about 763.7000080853.

The spelling of 445418638 in words is "four hundred forty-five million, four hundred eighteen thousand, six hundred thirty-eight".