1987900306382 has 8 divisors (see below), whose sum is σ = 2981865398400. Its totient is φ = 993945173584.

The previous prime is 1987900306321. The next prime is 1987900306451. The reversal of 1987900306382 is 2836030097891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1987900306382² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1969007 + ... + 2802282.

It is an arithmetic number, because the mean of its divisors is an integer number (372733174800).

Almost surely, 2^{1987900306382} is an apocalyptic number.

1987900306382 is a deficient number, since it is larger than the sum of its proper divisors (993965092018).

1987900306382 is a wasteful number, since it uses less digits than its factorization.

1987900306382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979610.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 1987900306382 in words is "one trillion, nine hundred eighty-seven billion, nine hundred million, three hundred six thousand, three hundred eighty-two".