1387487201 has 2 divisors, whose sum is σ = 1387487202. Its totient is φ = 1387487200.

The previous prime is 1387487131. The next prime is 1387487203. The reversal of 1387487201 is 1027847831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1025536576 + 361950625 = 32024^2 + 19025^2 .

It is a cyclic number.

It is not a de Polignac number, because 1387487201 - 2¹⁸ = 1387225057 is a prime.

Together with 1387487203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1387487203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693743600 + 693743601.

It is an arithmetic number, because the mean of its divisors is an integer number (693743601).

Almost surely, 2^1387487201 is an apocalyptic number.

It is an amenable number.

1387487201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387487201 is an equidigital number, since it uses as much as digits as its factorization.

1387487201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 1387487201 is about 37248.9892614551. The cubic root of 1387487201 is about 1115.3461227116.

The spelling of 1387487201 in words is "one billion, three hundred eighty-seven million, four hundred eighty-seven thousand, two hundred one".