1988510805332 has 6 divisors (see below), whose sum is σ = 3479893909338. Its totient is φ = 994255402664.

The previous prime is 1988510805287. The next prime is 1988510805371. The reversal of 1988510805332 is 2335080158891.

It can be written as a sum of positive squares in only one way, i.e., 1818004575556 + 170506229776 = 1348334^2 + 412924^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248563850663 + ... + 248563850670.

It is an arithmetic number, because the mean of its divisors is an integer number (579982318223).

Almost surely, 2^{1988510805332} is an apocalyptic number.

It is an amenable number.

1988510805332 is a deficient number, since it is larger than the sum of its proper divisors (1491383104006).

1988510805332 is a wasteful number, since it uses less digits than its factorization.

1988510805332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497127701337 (or 497127701335 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 53.

The spelling of 1988510805332 in words is "one trillion, nine hundred eighty-eight billion, five hundred ten million, eight hundred five thousand, three hundred thirty-two".