1283872844 has 24 divisors (see below), whose sum is σ = 2434270608. Its totient is φ = 590123520.

The previous prime is 1283872841. The next prime is 1283872847. The reversal of 1283872844 is 4482783821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1283872841) and next prime (1283872847).

It is not an unprimeable number, because it can be changed into a prime (1283872841) 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, 216617 + ... + 222464.

It is an arithmetic number, because the mean of its divisors is an integer number (101427942).

Almost surely, 2^1283872844 is an apocalyptic number.

It is an amenable number.

1283872844 is a deficient number, since it is larger than the sum of its proper divisors (1150397764).

1283872844 is a wasteful number, since it uses less digits than its factorization.

1283872844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439145 (or 439143 counting only the distinct ones).

The product of its digits is 688128, while the sum is 47.

The square root of 1283872844 is about 35831.1714014488. The cubic root of 1283872844 is about 1086.8609978187.

The spelling of 1283872844 in words is "one billion, two hundred eighty-three million, eight hundred seventy-two thousand, eight hundred forty-four".