1038989490 has 192 divisors, whose sum is σ = 3235921920. Its totient is φ = 208771200.

The previous prime is 1038989477. The next prime is 1038989491. The reversal of 1038989490 is 949898301.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1038989491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 787051 + ... + 788369.

It is an arithmetic number, because the mean of its divisors is an integer number (16853760).

Almost surely, 2^1038989490 is an apocalyptic number.

1038989490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1038989490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1617960960).

1038989490 is an abundant number, since it is smaller than the sum of its proper divisors (2196932430).

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

1038989490 is a wasteful number, since it uses less digits than its factorization.

1038989490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 1038989490 is about 32233.3598931294. The cubic root of 1038989490 is about 1012.8311539867.

It can be divided in two parts, 1038 and 989490, that added together give a triangular number (990528 = T₁₄₀₇).

The spelling of 1038989490 in words is "one billion, thirty-eight million, nine hundred eighty-nine thousand, four hundred ninety".