1987285241 has 2 divisors, whose sum is σ = 1987285242. Its totient is φ = 1987285240.

The previous prime is 1987285217. The next prime is 1987285253. The reversal of 1987285241 is 1425827891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1443696016 + 543589225 = 37996^2 + 23315^2 .

It is a cyclic number.

It is not a de Polignac number, because 1987285241 - 2⁶ = 1987285177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1987285271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 993642620 + 993642621.

It is an arithmetic number, because the mean of its divisors is an integer number (993642621).

Almost surely, 2^1987285241 is an apocalyptic number.

It is an amenable number.

1987285241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1987285241 is an equidigital number, since it uses as much as digits as its factorization.

1987285241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 47.

The square root of 1987285241 is about 44578.9775679075. The cubic root of 1987285241 is about 1257.2454398181.

The spelling of 1987285241 in words is "one billion, nine hundred eighty-seven million, two hundred eighty-five thousand, two hundred forty-one".