1181785342 has 8 divisors (see below), whose sum is σ = 1776082032. Its totient is φ = 589758000.

The previous prime is 1181785327. The next prime is 1181785349. The reversal of 1181785342 is 2435871811.

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

It is a junction number, because it is equal to n+sod(n) for n = 1181785295 and 1181785304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181785349) 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 3 ways as a sum of consecutive naturals, for example, 566034 + ... + 568117.

It is an arithmetic number, because the mean of its divisors is an integer number (222010254).

Almost surely, 2^1181785342 is an apocalyptic number.

1181785342 is a deficient number, since it is larger than the sum of its proper divisors (594296690).

1181785342 is a wasteful number, since it uses less digits than its factorization.

1181785342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134674.

The product of its digits is 53760, while the sum is 40.

The square root of 1181785342 is about 34377.1049100997. The cubic root of 1181785342 is about 1057.2544773319.

The spelling of 1181785342 in words is "one billion, one hundred eighty-one million, seven hundred eighty-five thousand, three hundred forty-two".