1161196187 has 8 divisors (see below), whose sum is σ = 1170169200. Its totient is φ = 1152239200.

The previous prime is 1161196177. The next prime is 1161196199. The reversal of 1161196187 is 7816911611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1161196187 - 2¹² = 1161192091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161196117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169937 + ... + 176637.

It is an arithmetic number, because the mean of its divisors is an integer number (146271150).

Almost surely, 2^1161196187 is an apocalyptic number.

1161196187 is a deficient number, since it is larger than the sum of its proper divisors (8973013).

1161196187 is a wasteful number, since it uses less digits than its factorization.

1161196187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8013.

The product of its digits is 18144, while the sum is 41.

The square root of 1161196187 is about 34076.3288368920. The cubic root of 1161196187 is about 1051.0786155703.

The spelling of 1161196187 in words is "one billion, one hundred sixty-one million, one hundred ninety-six thousand, one hundred eighty-seven".