1283312438 has 16 divisors (see below), whose sum is σ = 1935099936. Its totient is φ = 638288640.

The previous prime is 1283312431. The next prime is 1283312441. The reversal of 1283312438 is 8342133821.

It is a junction number, because it is equal to n+sod(n) for n = 1283312398 and 1283312407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283312431) 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, 323495 + ... + 327437.

It is an arithmetic number, because the mean of its divisors is an integer number (120943746).

Almost surely, 2^1283312438 is an apocalyptic number.

1283312438 is a deficient number, since it is larger than the sum of its proper divisors (651787498).

1283312438 is a wasteful number, since it uses less digits than its factorization.

1283312438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759.

The product of its digits is 27648, while the sum is 35.

The square root of 1283312438 is about 35823.3504574879. The cubic root of 1283312438 is about 1086.7028377980.

The spelling of 1283312438 in words is "one billion, two hundred eighty-three million, three hundred twelve thousand, four hundred thirty-eight".