1283144955 has 32 divisors (see below), whose sum is σ = 2288217600. Its totient is φ = 610186752.

The previous prime is 1283144927. The next prime is 1283144957. The reversal of 1283144955 is 5594413821.

It is not a de Polignac number, because 1283144955 - 2⁷ = 1283144827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1283144957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127575 + ... + 137264.

It is an arithmetic number, because the mean of its divisors is an integer number (71506800).

Almost surely, 2^1283144955 is an apocalyptic number.

1283144955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1283144955 is a deficient number, since it is larger than the sum of its proper divisors (1005072645).

1283144955 is a wasteful number, since it uses less digits than its factorization.

1283144955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264883.

The product of its digits is 172800, while the sum is 42.

The square root of 1283144955 is about 35821.0127578772. The cubic root of 1283144955 is about 1086.6555611400.

The spelling of 1283144955 in words is "one billion, two hundred eighty-three million, one hundred forty-four thousand, nine hundred fifty-five".