1283261155 has 8 divisors (see below), whose sum is σ = 1679905584. Its totient is φ = 933280800.

The previous prime is 1283261153. The next prime is 1283261237. The reversal of 1283261155 is 5511623821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1283261155 - 2¹ = 1283261153 is a prime.

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 1283261155.

It is not an unprimeable number, because it can be changed into a prime (1283261153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11665956 + ... + 11666065.

It is an arithmetic number, because the mean of its divisors is an integer number (209988198).

Almost surely, 2^1283261155 is an apocalyptic number.

1283261155 is a deficient number, since it is larger than the sum of its proper divisors (396644429).

1283261155 is a wasteful number, since it uses less digits than its factorization.

1283261155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23332037.

The product of its digits is 14400, while the sum is 34.

The square root of 1283261155 is about 35822.6346741833. The cubic root of 1283261155 is about 1086.6883622054.

Adding to 1283261155 its reverse (5511623821), we get a palindrome (6794884976).

The spelling of 1283261155 in words is "one billion, two hundred eighty-three million, two hundred sixty-one thousand, one hundred fifty-five".