1283789948 has 48 divisors (see below), whose sum is σ = 2743130880. Its totient is φ = 513444096.

The previous prime is 1283789933. The next prime is 1283789963. The reversal of 1283789948 is 8499873821.

It is an interprime number because it is at equal distance from previous prime (1283789933) and next prime (1283789963).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17636 + ... + 53652.

It is an arithmetic number, because the mean of its divisors is an integer number (57148560).

Almost surely, 2^1283789948 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1283789948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1371565440).

1283789948 is an abundant number, since it is smaller than the sum of its proper divisors (1459340932).

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

1283789948 is a wasteful number, since it uses less digits than its factorization.

1283789948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36114 (or 36112 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 59.

The square root of 1283789948 is about 35830.0146246133. The cubic root of 1283789948 is about 1086.8376054792.

The spelling of 1283789948 in words is "one billion, two hundred eighty-three million, seven hundred eighty-nine thousand, nine hundred forty-eight".