1989533502 has 40 divisors (see below), whose sum is σ = 4863308472. Its totient is φ = 602888400.

The previous prime is 1989533437. The next prime is 1989533537. The reversal of 1989533502 is 2053359891.

1989533502 is a `hidden beast` number, since 1 + 98 + 9 + 53 + 3 + 502 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 556449 + ... + 560012.

Almost surely, 2^1989533502 is an apocalyptic number.

1989533502 is an abundant number, since it is smaller than the sum of its proper divisors (2873774970).

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

1989533502 is a wasteful number, since it uses less digits than its factorization.

1989533502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116486 (or 1116477 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 1989533502 is about 44604.1870456127. The cubic root of 1989533502 is about 1257.7193779260.

The spelling of 1989533502 in words is "one billion, nine hundred eighty-nine million, five hundred thirty-three thousand, five hundred two".