1438330880 has 208 divisors, whose sum is σ = 4026040320. Its totient is φ = 483065856.

The previous prime is 1438330879. The next prime is 1438330891. The reversal of 1438330880 is 880338341.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11325377 + ... + 11325503.

Almost surely, 2^1438330880 is an apocalyptic number.

1438330880 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 1438330880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2013020160).

1438330880 is an abundant number, since it is smaller than the sum of its proper divisors (2587709440).

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

1438330880 is an equidigital number, since it uses as much as digits as its factorization.

1438330880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 1438330880 is about 37925.3329583275. The cubic root of 1438330880 is about 1128.8067598460.

The spelling of 1438330880 in words is "one billion, four hundred thirty-eight million, three hundred thirty thousand, eight hundred eighty".