450638154 has 48 divisors (see below), whose sum is σ = 1014931008. Its totient is φ = 149859072.

The previous prime is 450638147. The next prime is 450638173. The reversal of 450638154 is 451836054.

It is a happy number.

450638154 is a `hidden beast` number, since 4 + 5 + 0 + 638 + 15 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279619 + ... + 281225.

It is an arithmetic number, because the mean of its divisors is an integer number (21144396).

Almost surely, 2^450638154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 450638154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507465504).

450638154 is an abundant number, since it is smaller than the sum of its proper divisors (564292854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450638154 is a wasteful number, since it uses less digits than its factorization.

450638154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 450638154 is about 21228.2395407627. The cubic root of 450638154 is about 766.6715008727.

The spelling of 450638154 in words is "four hundred fifty million, six hundred thirty-eight thousand, one hundred fifty-four".