1987515352 has 16 divisors (see below), whose sum is σ = 3727064160. Its totient is φ = 993631584.

The previous prime is 1987515331. The next prime is 1987515371. The reversal of 1987515352 is 2535157891.

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, 117918 + ... + 133714.

It is an arithmetic number, because the mean of its divisors is an integer number (232941510).

Almost surely, 2^1987515352 is an apocalyptic number.

It is an amenable number.

1987515352 is a deficient number, since it is larger than the sum of its proper divisors (1739548808).

1987515352 is a wasteful number, since it uses less digits than its factorization.

1987515352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31530 (or 31526 counting only the distinct ones).

The product of its digits is 378000, while the sum is 46.

The square root of 1987515352 is about 44581.5584294672. The cubic root of 1987515352 is about 1257.2939641121.

The spelling of 1987515352 in words is "one billion, nine hundred eighty-seven million, five hundred fifteen thousand, three hundred fifty-two".