1988013630 has 16 divisors (see below), whose sum is σ = 4771232784. Its totient is φ = 530136960.

The previous prime is 1988013619. The next prime is 1988013631. The reversal of 1988013630 is 363108891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988013631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33133531 + ... + 33133590.

It is an arithmetic number, because the mean of its divisors is an integer number (298202049).

Almost surely, 2^1988013630 is an apocalyptic number.

1988013630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1988013630 is an abundant number, since it is smaller than the sum of its proper divisors (2783219154).

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

1988013630 is a wasteful number, since it uses less digits than its factorization.

1988013630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66267131.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 1988013630 is about 44587.1464662183. The cubic root of 1988013630 is about 1257.3990248646.

The spelling of 1988013630 in words is "one billion, nine hundred eighty-eight million, thirteen thousand, six hundred thirty".