1288338651 has 24 divisors (see below), whose sum is σ = 1880906976. Its totient is φ = 849703680.

The previous prime is 1288338617. The next prime is 1288338661. The reversal of 1288338651 is 1568338821.

It is not a de Polignac number, because 1288338651 - 2⁶ = 1288338587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1288338597 and 1288338606.

It is not an unprimeable number, because it can be changed into a prime (1288338661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 834186 + ... + 835728.

It is an arithmetic number, because the mean of its divisors is an integer number (78371124).

Almost surely, 2^1288338651 is an apocalyptic number.

1288338651 is a deficient number, since it is larger than the sum of its proper divisors (592568325).

1288338651 is a wasteful number, since it uses less digits than its factorization.

1288338651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483 (or 2480 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 1288338651 is about 35893.4346503647. The cubic root of 1288338651 is about 1088.1197140092.

The spelling of 1288338651 in words is "one billion, two hundred eighty-eight million, three hundred thirty-eight thousand, six hundred fifty-one".