1161930851 has 4 divisors (see below), whose sum is σ = 1186652832. Its totient is φ = 1137208872.

The previous prime is 1161930827. The next prime is 1161930863. The reversal of 1161930851 is 1580391611.

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 1161930851 - 2¹⁰ = 1161929827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161930881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12360920 + ... + 12361013.

It is an arithmetic number, because the mean of its divisors is an integer number (296663208).

Almost surely, 2^1161930851 is an apocalyptic number.

1161930851 is a deficient number, since it is larger than the sum of its proper divisors (24721981).

1161930851 is an equidigital number, since it uses as much as digits as its factorization.

1161930851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24721980.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 1161930851 is about 34087.1068147474. The cubic root of 1161930851 is about 1051.3002338281.

The spelling of 1161930851 in words is "one billion, one hundred sixty-one million, nine hundred thirty thousand, eight hundred fifty-one".