1281738255 has 16 divisors (see below), whose sum is σ = 2343750144. Its totient is φ = 585937440.

The previous prime is 1281738253. The next prime is 1281738301. The reversal of 1281738255 is 5528371821.

It is not a de Polignac number, because 1281738255 - 2¹ = 1281738253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281738253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6103411 + ... + 6103620.

It is an arithmetic number, because the mean of its divisors is an integer number (146484384).

Almost surely, 2^1281738255 is an apocalyptic number.

1281738255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1281738255 is a deficient number, since it is larger than the sum of its proper divisors (1062011889).

1281738255 is a wasteful number, since it uses less digits than its factorization.

1281738255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12207046.

The product of its digits is 134400, while the sum is 42.

The square root of 1281738255 is about 35801.3722502364. The cubic root of 1281738255 is about 1086.2583191115.

The spelling of 1281738255 in words is "one billion, two hundred eighty-one million, seven hundred thirty-eight thousand, two hundred fifty-five".