1987074644050 has 24 divisors (see below), whose sum is σ = 3696586138836. Its totient is φ = 794694954240.

The previous prime is 1987074644003. The next prime is 1987074644059. The reversal of 1987074644050 is 504464707891.

It can be written as a sum of positive squares in 6 ways, for example, as 587214157401 + 1399860486649 = 766299^2 + 1183157^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1987074643982 and 1987074644000.

It is not an unprimeable number, because it can be changed into a prime (1987074644059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3074787 + ... + 3664486.

Almost surely, 2^{1987074644050} is an apocalyptic number.

1987074644050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1987074644050 is a deficient number, since it is larger than the sum of its proper divisors (1709511494786).

1987074644050 is a wasteful number, since it uses less digits than its factorization.

1987074644050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6745182 (or 6745177 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 1987074644050 in words is "one trillion, nine hundred eighty-seven billion, seventy-four million, six hundred forty-four thousand, fifty".