1138772684 has 48 divisors (see below), whose sum is σ = 2299207680. Its totient is φ = 483430080.

The previous prime is 1138772683. The next prime is 1138772707. The reversal of 1138772684 is 4862778311.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1138772683) by changing a digit.

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, 2377157 + ... + 2377635.

It is an arithmetic number, because the mean of its divisors is an integer number (47900160).

Almost surely, 2^1138772684 is an apocalyptic number.

1138772684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1138772684 is an abundant number, since it is smaller than the sum of its proper divisors (1160434996).

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

1138772684 is a wasteful number, since it uses less digits than its factorization.

1138772684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 1116 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 1138772684 is about 33745.7061564875. The cubic root of 1138772684 is about 1044.2689067685.

The spelling of 1138772684 in words is "one billion, one hundred thirty-eight million, seven hundred seventy-two thousand, six hundred eighty-four".