1283235345 has 128 divisors (see below), whose sum is σ = 2686970880. Its totient is φ = 568995840.

The previous prime is 1283235323. The next prime is 1283235383. The reversal of 1283235345 is 5435323821.

1283235345 is a `hidden beast` number, since 1 + 2 + 83 + 235 + 345 = 666.

It is not a de Polignac number, because 1283235345 - 2¹⁰ = 1283234321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6513787 + ... + 6513983.

It is an arithmetic number, because the mean of its divisors is an integer number (20991960).

Almost surely, 2^1283235345 is an apocalyptic number.

1283235345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1283235345 is an abundant number, since it is smaller than the sum of its proper divisors (1403735535).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1283235345 is a wasteful number, since it uses less digits than its factorization.

1283235345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 386 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1283235345 is about 35822.2744252790. The cubic root of 1283235345 is about 1086.6810767009.

The spelling of 1283235345 in words is "one billion, two hundred eighty-three million, two hundred thirty-five thousand, three hundred forty-five".