1989360752 has 20 divisors (see below), whose sum is σ = 3897696960. Its totient is φ = 983503488.

The previous prime is 1989360749. The next prime is 1989360773. The reversal of 1989360752 is 2570639891.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1989360752.

It is a congruent 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, 697088 + ... + 699935.

It is an arithmetic number, because the mean of its divisors is an integer number (194884848).

Almost surely, 2^1989360752 is an apocalyptic number.

It is an amenable number.

1989360752 is a deficient number, since it is larger than the sum of its proper divisors (1908336208).

1989360752 is a wasteful number, since it uses less digits than its factorization.

1989360752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397120 (or 1397114 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 1989360752 is about 44602.2505261786. The cubic root of 1989360752 is about 1257.6829745328.

The spelling of 1989360752 in words is "one billion, nine hundred eighty-nine million, three hundred sixty thousand, seven hundred fifty-two".