1161725803 has 4 divisors (see below), whose sum is σ = 1327686640. Its totient is φ = 995764968.

The previous prime is 1161725777. The next prime is 1161725839. The reversal of 1161725803 is 3085271611.

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 1161725803 - 2⁹ = 1161725291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161725863) 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, 82980408 + ... + 82980421.

It is an arithmetic number, because the mean of its divisors is an integer number (331921660).

Almost surely, 2^1161725803 is an apocalyptic number.

1161725803 is a deficient number, since it is larger than the sum of its proper divisors (165960837).

1161725803 is an equidigital number, since it uses as much as digits as its factorization.

1161725803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165960836.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1161725803 is about 34084.0989759154. The cubic root of 1161725803 is about 1051.2383885838.

The spelling of 1161725803 in words is "one billion, one hundred sixty-one million, seven hundred twenty-five thousand, eight hundred three".