1989519246 has 96 divisors (see below), whose sum is σ = 5251978368. Its totient is φ = 556489440.

The previous prime is 1989519167. The next prime is 1989519281. The reversal of 1989519246 is 6429159891.

1989519246 is a `hidden beast` number, since 1 + 9 + 89 + 519 + 2 + 46 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1989519192 and 1989519201.

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, 55185 + ... + 83811.

It is an arithmetic number, because the mean of its divisors is an integer number (54708108).

Almost surely, 2^1989519246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1989519246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2625989184).

1989519246 is an abundant number, since it is smaller than the sum of its proper divisors (3262459122).

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

1989519246 is a wasteful number, since it uses less digits than its factorization.

1989519246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28668 (or 28656 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 1989519246 is about 44604.0272397011. The cubic root of 1989519246 is about 1257.7163738566.

The spelling of 1989519246 in words is "one billion, nine hundred eighty-nine million, five hundred nineteen thousand, two hundred forty-six".