1044776138 has 24 divisors (see below), whose sum is σ = 1825247844. Its totient is φ = 447216000.

The previous prime is 1044776129. The next prime is 1044776149. The reversal of 1044776138 is 8316774401.

It can be written as a sum of positive squares in 2 ways, for example, as 1000646689 + 44129449 = 31633^2 + 6643^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1044776095 and 1044776104.

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 11 ways as a sum of consecutive naturals, for example, 80288 + ... + 92388.

Almost surely, 2^1044776138 is an apocalyptic number.

1044776138 is a deficient number, since it is larger than the sum of its proper divisors (780471706).

1044776138 is a wasteful number, since it uses less digits than its factorization.

1044776138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12998 (or 12991 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 1044776138 is about 32322.9970454474. The cubic root of 1044776138 is about 1014.7079936858.

The spelling of 1044776138 in words is "one billion, forty-four million, seven hundred seventy-six thousand, one hundred thirty-eight".