1987621482 has 128 divisors (see below), whose sum is σ = 5158453248. Its totient is φ = 495475200.

The previous prime is 1987621481. The next prime is 1987621507. The reversal of 1987621482 is 2841267891.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1987621481) 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 63 ways as a sum of consecutive naturals, for example, 1961608 + ... + 1962620.

It is an arithmetic number, because the mean of its divisors is an integer number (40300416).

Almost surely, 2^1987621482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1987621482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2579226624).

1987621482 is an abundant number, since it is smaller than the sum of its proper divisors (3170831766).

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

1987621482 is a wasteful number, since it uses less digits than its factorization.

1987621482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204.

The product of its digits is 387072, while the sum is 48.

The square root of 1987621482 is about 44582.7487039550. The cubic root of 1987621482 is about 1257.3163428463.

The spelling of 1987621482 in words is "one billion, nine hundred eighty-seven million, six hundred twenty-one thousand, four hundred eighty-two".