1438105500 has 432 divisors, whose sum is σ = 5154170112. Its totient is φ = 336960000.

The previous prime is 1438105499. The next prime is 1438105507. The reversal of 1438105500 is 55018341.

1438105500 is a `hidden beast` number, since 143 + 8 + 10 + 5 + 500 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438105507) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 23575470 + ... + 23575530.

Almost surely, 2^1438105500 is an apocalyptic number.

1438105500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1438105500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2577085056).

1438105500 is an abundant number, since it is smaller than the sum of its proper divisors (3716064612).

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

1438105500 is a wasteful number, since it uses less digits than its factorization.

1438105500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1438105500 is about 37922.3614771021. The cubic root of 1438105500 is about 1128.7477971135.

The spelling of 1438105500 in words is "one billion, four hundred thirty-eight million, one hundred five thousand, five hundred".