1288874974739 has 4 divisors (see below), whose sum is σ = 1406045427000. Its totient is φ = 1171704522480.

The previous prime is 1288874974729. The next prime is 1288874974757. The reversal of 1288874974739 is 9374794788821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288874974739 is a prime.

It is a super-2 number, since 2×1288874974739² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1288874974739.

It is not an unprimeable number, because it can be changed into a prime (1288874974729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58585226114 + ... + 58585226135.

It is an arithmetic number, because the mean of its divisors is an integer number (351511356750).

Almost surely, 2^{1288874974739} is an apocalyptic number.

1288874974739 is a deficient number, since it is larger than the sum of its proper divisors (117170452261).

1288874974739 is a wasteful number, since it uses less digits than its factorization.

1288874974739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117170452260.

The product of its digits is 1365590016, while the sum is 77.

The spelling of 1288874974739 in words is "one trillion, two hundred eighty-eight billion, eight hundred seventy-four million, nine hundred seventy-four thousand, seven hundred thirty-nine".