1161326513 has 8 divisors (see below), whose sum is σ = 1191758400. Its totient is φ = 1131210288.

The previous prime is 1161326503. The next prime is 1161326519. The reversal of 1161326513 is 3156231611.

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 1161326513 - 2⁴ = 1161326497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1161326519) 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, 71453 + ... + 86186.

It is an arithmetic number, because the mean of its divisors is an integer number (148969800).

Almost surely, 2^1161326513 is an apocalyptic number.

It is an amenable number.

1161326513 is a deficient number, since it is larger than the sum of its proper divisors (30431887).

1161326513 is a wasteful number, since it uses less digits than its factorization.

1161326513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157831.

The product of its digits is 3240, while the sum is 29.

The square root of 1161326513 is about 34078.2410490917. The cubic root of 1161326513 is about 1051.1179364444.

The spelling of 1161326513 in words is "one billion, one hundred sixty-one million, three hundred twenty-six thousand, five hundred thirteen".