1989248036 has 12 divisors (see below), whose sum is σ = 3486226800. Its totient is φ = 993183240.

The previous prime is 1989247957. The next prime is 1989248059. The reversal of 1989248036 is 6308429891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357086 + ... + 362613.

It is an arithmetic number, because the mean of its divisors is an integer number (290518900).

Almost surely, 2^1989248036 is an apocalyptic number.

It is an amenable number.

1989248036 is a deficient number, since it is larger than the sum of its proper divisors (1496978764).

1989248036 is a wasteful number, since it uses less digits than its factorization.

1989248036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720394 (or 720392 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 1989248036 is about 44600.9869397528. The cubic root of 1989248036 is about 1257.6592208937.

The spelling of 1989248036 in words is "one billion, nine hundred eighty-nine million, two hundred forty-eight thousand, thirty-six".