1989486030 has 256 divisors, whose sum is σ = 6019743744. Its totient is φ = 410511360.

The previous prime is 1989486019. The next prime is 1989486113. The reversal of 1989486030 is 306849891.

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 127 ways as a sum of consecutive naturals, for example, 11913007 + ... + 11913173.

It is an arithmetic number, because the mean of its divisors is an integer number (23514624).

Almost surely, 2^1989486030 is an apocalyptic number.

1989486030 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 1989486030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3009871872).

1989486030 is an abundant number, since it is smaller than the sum of its proper divisors (4030257714).

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

1989486030 is a wasteful number, since it uses less digits than its factorization.

1989486030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 1989486030 is about 44603.6548950868. The cubic root of 1989486030 is about 1257.7093744203.

The spelling of 1989486030 in words is "one billion, nine hundred eighty-nine million, four hundred eighty-six thousand, thirty".