1197518161 has 8 divisors (see below), whose sum is σ = 1428096384. Its totient is φ = 981816000.

The previous prime is 1197518143. The next prime is 1197518171. The reversal of 1197518161 is 1618157911.

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 1197518161 - 2⁹ = 1197517649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1197518171) 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, 3718840 + ... + 3719161.

It is an arithmetic number, because the mean of its divisors is an integer number (178512048).

Almost surely, 2^1197518161 is an apocalyptic number.

It is an amenable number.

1197518161 is a deficient number, since it is larger than the sum of its proper divisors (230578223).

1197518161 is an equidigital number, since it uses as much as digits as its factorization.

1197518161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7438031.

The product of its digits is 15120, while the sum is 40.

The square root of 1197518161 is about 34605.1753499386. The cubic root of 1197518161 is about 1061.9254670273.

The spelling of 1197518161 in words is "one billion, one hundred ninety-seven million, five hundred eighteen thousand, one hundred sixty-one".