1138680784 has 10 divisors (see below), whose sum is σ = 2206194050. Its totient is φ = 569340384.

The previous prime is 1138680761. The next prime is 1138680787. The reversal of 1138680784 is 4870868311.

It can be written as a sum of positive squares in only one way, i.e., 1097464384 + 41216400 = 33128^2 + 6420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138680787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35583759 + ... + 35583790.

It is an arithmetic number, because the mean of its divisors is an integer number (220619405).

Almost surely, 2^1138680784 is an apocalyptic number.

It is an amenable number.

1138680784 is a deficient number, since it is larger than the sum of its proper divisors (1067513266).

1138680784 is an equidigital number, since it uses as much as digits as its factorization.

1138680784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71167557 (or 71167551 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 1138680784 is about 33744.3444742967. The cubic root of 1138680784 is about 1044.2408148600.

The spelling of 1138680784 in words is "one billion, one hundred thirty-eight million, six hundred eighty thousand, seven hundred eighty-four".