1987074644049 has 20 divisors (see below), whose sum is σ = 3238195717680. Its totient is φ = 1204287662520.

The previous prime is 1987074644003. The next prime is 1987074644059. The reversal of 1987074644049 is 9404464707891.

1987074644049 is a `hidden beast` number, since 1 + 9 + 87 + 0 + 74 + 6 + 440 + 49 = 666.

It is not a de Polignac number, because 1987074644049 - 2¹⁷ = 1987074512977 is a prime.

It is a super-2 number, since 2×1987074644049² (a number of 25 digits) contains 22 as substring.

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 19 ways as a sum of consecutive naturals, for example, 1115080279 + ... + 1115082060.

It is an arithmetic number, because the mean of its divisors is an integer number (161909785884).

Almost surely, 2^{1987074644049} is an apocalyptic number.

It is an amenable number.

1987074644049 is a deficient number, since it is larger than the sum of its proper divisors (1251121073631).

1987074644049 is a wasteful number, since it uses less digits than its factorization.

1987074644049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230162362 (or 2230162353 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 1987074644049 in words is "one trillion, nine hundred eighty-seven billion, seventy-four million, six hundred forty-four thousand, forty-nine".