1131944678 has 32 divisors (see below), whose sum is σ = 1791840960. Its totient is φ = 536279040.

The previous prime is 1131944659. The next prime is 1131944831. The reversal of 1131944678 is 8764491311.

It is a super-3 number, since 3×1131944678³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4404326 + ... + 4404582.

It is an arithmetic number, because the mean of its divisors is an integer number (55995030).

Almost surely, 2^1131944678 is an apocalyptic number.

1131944678 is a deficient number, since it is larger than the sum of its proper divisors (659896282).

1131944678 is an equidigital number, since it uses as much as digits as its factorization.

1131944678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 463 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 1131944678 is about 33644.3855345881. The cubic root of 1131944678 is about 1042.1775988754.

The spelling of 1131944678 in words is "one billion, one hundred thirty-one million, nine hundred forty-four thousand, six hundred seventy-eight".