1283964938 has 32 divisors (see below), whose sum is σ = 2085108480. Its totient is φ = 590976000.

The previous prime is 1283964901. The next prime is 1283964943. The reversal of 1283964938 is 8394693821.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1283964938.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420698 + ... + 423738.

It is an arithmetic number, because the mean of its divisors is an integer number (65159640).

Almost surely, 2^1283964938 is an apocalyptic number.

1283964938 is a deficient number, since it is larger than the sum of its proper divisors (801143542).

1283964938 is a wasteful number, since it uses less digits than its factorization.

1283964938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374.

The product of its digits is 2239488, while the sum is 53.

The square root of 1283964938 is about 35832.4564884966. The cubic root of 1283964938 is about 1086.8869845520.

It can be divided in two parts, 12839 and 64938, that added together give a palindrome (77777).

The spelling of 1283964938 in words is "one billion, two hundred eighty-three million, nine hundred sixty-four thousand, nine hundred thirty-eight".