1288738201 has 3 divisors (see below), whose sum is σ = 1288774101. Its totient is φ = 1288702302.

The previous prime is 1288738189. The next prime is 1288738223. The reversal of 1288738201 is 1028378821.

The square root of 1288738201 is 35899.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1028378821 = 593 ⋅1734197.

It is not a de Polignac number, because 1288738201 - 2⁹ = 1288737689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1288738271) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 17950 + ... + 53848.

It is an arithmetic number, because the mean of its divisors is an integer number (429591367).

Almost surely, 2^1288738201 is an apocalyptic number.

1288738201 is the 35899-th square number.

1288738201 is the 17950-th centered octagonal number.

It is an amenable number.

1288738201 is a deficient number, since it is larger than the sum of its proper divisors (35900).

1288738201 is an frugal number, since it uses more digits than its factorization.

1288738201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71798 (or 35899 counting only the distinct ones).

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

The cubic root of 1288738201 is about 1088.2321878777.

The spelling of 1288738201 in words is "one billion, two hundred eighty-eight million, seven hundred thirty-eight thousand, two hundred one".