1139742863 has 8 divisors (see below), whose sum is σ = 1306727328. Its totient is φ = 973799424.

The previous prime is 1139742859. The next prime is 1139742979. The reversal of 1139742863 is 3682479311.

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

It is a cyclic number.

It is not a de Polignac number, because 1139742863 - 2² = 1139742859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139745863) 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 in 7 ways as a sum of consecutive naturals, for example, 257906 + ... + 262287.

It is an arithmetic number, because the mean of its divisors is an integer number (163340916).

Almost surely, 2^1139742863 is an apocalyptic number.

1139742863 is a deficient number, since it is larger than the sum of its proper divisors (166984465).

1139742863 is an equidigital number, since it uses as much as digits as its factorization.

1139742863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520513.

The product of its digits is 217728, while the sum is 44.

The square root of 1139742863 is about 33760.0779471849. The cubic root of 1139742863 is about 1044.5653780492.

The spelling of 1139742863 in words is "one billion, one hundred thirty-nine million, seven hundred forty-two thousand, eight hundred sixty-three".