1138773831 has 8 divisors (see below), whose sum is σ = 1635162480. Its totient is φ = 700783872.

The previous prime is 1138773817. The next prime is 1138773841. The reversal of 1138773831 is 1383778311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1138773831 - 2⁶ = 1138773767 is a prime.

It is a super-2 number, since 2×1138773831² = 2593611676340833122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138773841) 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, 14599626 + ... + 14599703.

It is an arithmetic number, because the mean of its divisors is an integer number (204395310).

Almost surely, 2^1138773831 is an apocalyptic number.

1138773831 is a deficient number, since it is larger than the sum of its proper divisors (496388649).

1138773831 is a wasteful number, since it uses less digits than its factorization.

1138773831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29199345.

The product of its digits is 84672, while the sum is 42.

The square root of 1138773831 is about 33745.7231512380. The cubic root of 1138773831 is about 1044.2692573729.

The spelling of 1138773831 in words is "one billion, one hundred thirty-eight million, seven hundred seventy-three thousand, eight hundred thirty-one".