1280823183 has 12 divisors (see below), whose sum is σ = 1852120608. Its totient is φ = 852939360.

The previous prime is 1280823169. The next prime is 1280823239. The reversal of 1280823183 is 3813280821.

It is not a de Polignac number, because 1280823183 - 2¹⁰ = 1280822159 is a prime.

It is a super-2 number, since 2×1280823183² = 3281016052220502978, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280823133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69910 + ... + 86307.

It is an arithmetic number, because the mean of its divisors is an integer number (154343384).

Almost surely, 2^1280823183 is an apocalyptic number.

1280823183 is a deficient number, since it is larger than the sum of its proper divisors (571297425).

1280823183 is a wasteful number, since it uses less digits than its factorization.

1280823183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157134 (or 157131 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1280823183 is about 35788.5901231105. The cubic root of 1280823183 is about 1085.9997532635. Note that the first 3 decimals are identical.

The spelling of 1280823183 in words is "one billion, two hundred eighty million, eight hundred twenty-three thousand, one hundred eighty-three".