1168539890 has 16 divisors (see below), whose sum is σ = 2403853632. Its totient is φ = 400642224.

The previous prime is 1168539887. The next prime is 1168539917. The reversal of 1168539890 is 989358611.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8346644 + ... + 8346783.

It is an arithmetic number, because the mean of its divisors is an integer number (150240852).

Almost surely, 2^1168539890 is an apocalyptic number.

1168539890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1168539890 is an abundant number, since it is smaller than the sum of its proper divisors (1235313742).

1168539890 is a wasteful number, since it uses less digits than its factorization.

1168539890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16693441.

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 1168539890 is about 34183.9127368416. The cubic root of 1168539890 is about 1053.2897246229.

The spelling of 1168539890 in words is "one billion, one hundred sixty-eight million, five hundred thirty-nine thousand, eight hundred ninety".