1288144745 has 16 divisors (see below), whose sum is σ = 1584361728. Its totient is φ = 1004949120.

The previous prime is 1288144727. The next prime is 1288144763. The reversal of 1288144745 is 5474418821.

It is an interprime number because it is at equal distance from previous prime (1288144727) and next prime (1288144763).

It is not a de Polignac number, because 1288144745 - 2¹⁸ = 1287882601 is a prime.

It is a super-2 number, since 2×1288144745² = 3318633768142230050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1288144696 and 1288144705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56282 + ... + 75788.

It is an arithmetic number, because the mean of its divisors is an integer number (99022608).

Almost surely, 2^1288144745 is an apocalyptic number.

It is an amenable number.

1288144745 is a deficient number, since it is larger than the sum of its proper divisors (296216983).

1288144745 is a wasteful number, since it uses less digits than its factorization.

1288144745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19840.

The product of its digits is 286720, while the sum is 44.

The square root of 1288144745 is about 35890.7334140722. The cubic root of 1288144745 is about 1088.0651208251.

The spelling of 1288144745 in words is "one billion, two hundred eighty-eight million, one hundred forty-four thousand, seven hundred forty-five".