1194225161 has 4 divisors (see below), whose sum is σ = 1197833424. Its totient is φ = 1190616900.

The previous prime is 1194225143. The next prime is 1194225167. The reversal of 1194225161 is 1615224911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1194225161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1194225167) 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, 1803635 + ... + 1804296.

It is an arithmetic number, because the mean of its divisors is an integer number (299458356).

Almost surely, 2^1194225161 is an apocalyptic number.

It is an amenable number.

1194225161 is a deficient number, since it is larger than the sum of its proper divisors (3608263).

1194225161 is an equidigital number, since it uses as much as digits as its factorization.

1194225161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608262.

The product of its digits is 4320, while the sum is 32.

The square root of 1194225161 is about 34557.5630072492. The cubic root of 1194225161 is about 1060.9511934775.

The spelling of 1194225161 in words is "one billion, one hundred ninety-four million, two hundred twenty-five thousand, one hundred sixty-one".