450191864 has 16 divisors (see below), whose sum is σ = 850273200. Its totient is φ = 223452352.

The previous prime is 450191851. The next prime is 450191867. The reversal of 450191864 is 468191054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450191867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204284 + ... + 206475.

It is an arithmetic number, because the mean of its divisors is an integer number (53142075).

Almost surely, 2^450191864 is an apocalyptic number.

It is an amenable number.

450191864 is a deficient number, since it is larger than the sum of its proper divisors (400081336).

450191864 is a wasteful number, since it uses less digits than its factorization.

450191864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410902 (or 410898 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 450191864 is about 21217.7252315134. The cubic root of 450191864 is about 766.4183259507.

The spelling of 450191864 in words is "four hundred fifty million, one hundred ninety-one thousand, eight hundred sixty-four".