1281792755 has 8 divisors (see below), whose sum is σ = 1539190512. Its totient is φ = 1024741408.

The previous prime is 1281792731. The next prime is 1281792767. The reversal of 1281792755 is 5572971821.

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 1281792755 - 2¹⁴ = 1281776371 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78389 + ... + 93318.

It is an arithmetic number, because the mean of its divisors is an integer number (192398814).

Almost surely, 2^1281792755 is an apocalyptic number.

1281792755 is a deficient number, since it is larger than the sum of its proper divisors (257397757).

1281792755 is a wasteful number, since it uses less digits than its factorization.

1281792755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173205.

The product of its digits is 352800, while the sum is 47.

The square root of 1281792755 is about 35802.1333861545. The cubic root of 1281792755 is about 1086.2737149328.

The spelling of 1281792755 in words is "one billion, two hundred eighty-one million, seven hundred ninety-two thousand, seven hundred fifty-five".