1163842399 has 4 divisors (see below), whose sum is σ = 1166881536. Its totient is φ = 1160803264.

The previous prime is 1163842391. The next prime is 1163842411. The reversal of 1163842399 is 9932483611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1163842399 - 2³ = 1163842391 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 (1163842391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1518994 + ... + 1519759.

It is an arithmetic number, because the mean of its divisors is an integer number (291720384).

Almost surely, 2^1163842399 is an apocalyptic number.

1163842399 is a deficient number, since it is larger than the sum of its proper divisors (3039137).

1163842399 is an equidigital number, since it uses as much as digits as its factorization.

1163842399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039136.

The product of its digits is 279936, while the sum is 46.

The square root of 1163842399 is about 34115.1344567188. The cubic root of 1163842399 is about 1051.8764327268.

It can be divided in two parts, 1163842 and 399, that added together give a square (1164241 = 1079²).

The spelling of 1163842399 in words is "one billion, one hundred sixty-three million, eight hundred forty-two thousand, three hundred ninety-nine".