1161330815 has 8 divisors (see below), whose sum is σ = 1394489040. Its totient is φ = 928469952.

The previous prime is 1161330811. The next prime is 1161330847. The reversal of 1161330815 is 5180331611.

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 1161330815 - 2² = 1161330811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161330811) 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, 65654 + ... + 81443.

It is an arithmetic number, because the mean of its divisors is an integer number (174311130).

Almost surely, 2^1161330815 is an apocalyptic number.

1161330815 is a deficient number, since it is larger than the sum of its proper divisors (233158225).

1161330815 is a wasteful number, since it uses less digits than its factorization.

1161330815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148681.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1161330815 is about 34078.3041684882. The cubic root of 1161330815 is about 1051.1192343578.

The spelling of 1161330815 in words is "one billion, one hundred sixty-one million, three hundred thirty thousand, eight hundred fifteen".