1989410124 has 96 divisors (see below), whose sum is σ = 5288738560. Its totient is φ = 576979200.

The previous prime is 1989410123. The next prime is 1989410149. The reversal of 1989410124 is 4210149891.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1989410123) 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 31 ways as a sum of consecutive naturals, for example, 623814 + ... + 626994.

Almost surely, 2^1989410124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1989410124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2644369280).

1989410124 is an abundant number, since it is smaller than the sum of its proper divisors (3299328436).

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

1989410124 is a wasteful number, since it uses less digits than its factorization.

1989410124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3431 (or 3429 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1989410124 is about 44602.8039925743. The cubic root of 1989410124 is about 1257.6933788482.

It can be divided in two parts, 1989 and 410124, that multiplied together give a triangular number (815736636 = T₄₀₃₉₁).

The spelling of 1989410124 in words is "one billion, nine hundred eighty-nine million, four hundred ten thousand, one hundred twenty-four".