1988533902 has 32 divisors (see below), whose sum is σ = 4022112672. Its totient is φ = 655376384.

The previous prime is 1988533891. The next prime is 1988533909. The reversal of 1988533902 is 2093358891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988533909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206548 + ... + 215960.

It is an arithmetic number, because the mean of its divisors is an integer number (125691021).

Almost surely, 2^1988533902 is an apocalyptic number.

1988533902 is an abundant number, since it is smaller than the sum of its proper divisors (2033578770).

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

1988533902 is a wasteful number, since it uses less digits than its factorization.

1988533902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9812.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 1988533902 is about 44592.9804117195. The cubic root of 1988533902 is about 1257.5087042678.

The spelling of 1988533902 in words is "one billion, nine hundred eighty-eight million, five hundred thirty-three thousand, nine hundred two".