1387488001 has 5 divisors (see below), whose sum is σ = 1394714501. Its totient is φ = 1380298944.

The previous prime is 1387487993. The next prime is 1387488013. The reversal of 1387488001 is 1008847831.

The square root of 1387488001 is 37249.

It is a perfect power (a square, a biquadrate), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 368601601 + 1018886400 = 19199^2 + 31920^2 .

It is not a de Polignac number, because 1387488001 - 2³ = 1387487993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387488071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 7188961 + ... + 7189153.

Almost surely, 2^1387488001 is an apocalyptic number.

1387488001 is the 37249-th square number.

1387488001 is the 18625-th centered octagonal number.

It is an amenable number.

1387488001 is a deficient number, since it is larger than the sum of its proper divisors (7226500).

1387488001 is an frugal number, since it uses more digits than its factorization.

1387488001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The cubic root of 1387488001 is about 1115.3463370744.

The spelling of 1387488001 in words is "one billion, three hundred eighty-seven million, four hundred eighty-eight thousand, one".