1288875145 has 8 divisors (see below), whose sum is σ = 1637629704. Its totient is φ = 970447104.

The previous prime is 1288875103. The next prime is 1288875169. The reversal of 1288875145 is 5415788821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 742671504 + 546203641 = 27252^2 + 23371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1288875145 - 2¹⁹ = 1288350857 is a prime.

It is a super-2 number, since 2×1288875145² = 3322398278797542050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7581534 + ... + 7581703.

It is an arithmetic number, because the mean of its divisors is an integer number (204703713).

Almost surely, 2^1288875145 is an apocalyptic number.

It is an amenable number.

1288875145 is a deficient number, since it is larger than the sum of its proper divisors (348754559).

1288875145 is a wasteful number, since it uses less digits than its factorization.

1288875145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15163259.

The product of its digits is 716800, while the sum is 49.

The square root of 1288875145 is about 35900.9073005126. The cubic root of 1288875145 is about 1088.2707324505.

The spelling of 1288875145 in words is "one billion, two hundred eighty-eight million, eight hundred seventy-five thousand, one hundred forty-five".