1438983900 has 144 divisors (see below), whose sum is σ = 4702442080. Its totient is φ = 377395200.

The previous prime is 1438983893. The next prime is 1438983911. The reversal of 1438983900 is 93898341.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 160332 + ... + 169068.

Almost surely, 2^1438983900 is an apocalyptic number.

1438983900 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 1438983900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2351221040).

1438983900 is an abundant number, since it is smaller than the sum of its proper divisors (3263458180).

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

1438983900 is a wasteful number, since it uses less digits than its factorization.

1438983900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8821 (or 8808 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1438983900 is about 37933.9412663646. The cubic root of 1438983900 is about 1128.9775647405.

It can be divided in two parts, 14389 and 83900, that added together give a palindrome (98289).

The spelling of 1438983900 in words is "one billion, four hundred thirty-eight million, nine hundred eighty-three thousand, nine hundred".