1987455332 has 12 divisors (see below), whose sum is σ = 3489919356. Its totient is φ = 990335520.

The previous prime is 1987455319. The next prime is 1987455341. The reversal of 1987455332 is 2335547891.

It can be written as a sum of positive squares in 2 ways, for example, as 1749246976 + 238208356 = 41824^2 + 15434^2 .

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, 846719 + ... + 849062.

It is an arithmetic number, because the mean of its divisors is an integer number (290826613).

Almost surely, 2^1987455332 is an apocalyptic number.

It is an amenable number.

1987455332 is a deficient number, since it is larger than the sum of its proper divisors (1502464024).

1987455332 is a wasteful number, since it uses less digits than its factorization.

1987455332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696078 (or 1696076 counting only the distinct ones).

The product of its digits is 907200, while the sum is 47.

The square root of 1987455332 is about 44580.8852760911. The cubic root of 1987455332 is about 1257.2813078504.

The spelling of 1987455332 in words is "one billion, nine hundred eighty-seven million, four hundred fifty-five thousand, three hundred thirty-two".