1438890108 has 24 divisors (see below), whose sum is σ = 3358798800. Its totient is φ = 479431680.

The previous prime is 1438890067. The next prime is 1438890113. The reversal of 1438890108 is 8010988341.

It is a self number, because there is not a number n which added to its sum of digits gives 1438890108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7068 + ... + 54108.

It is an arithmetic number, because the mean of its divisors is an integer number (139949950).

Almost surely, 2^1438890108 is an apocalyptic number.

It is an amenable number.

1438890108 is an abundant number, since it is smaller than the sum of its proper divisors (1919908692).

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

1438890108 is a wasteful number, since it uses less digits than its factorization.

1438890108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49597 (or 49595 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 1438890108 is about 37932.7049918668. The cubic root of 1438890108 is about 1128.9530355422.

The spelling of 1438890108 in words is "one billion, four hundred thirty-eight million, eight hundred ninety thousand, one hundred eight".