1155664915 has 8 divisors (see below), whose sum is σ = 1387000080. Its totient is φ = 924397152.

The previous prime is 1155664907. The next prime is 1155664921. The reversal of 1155664915 is 5194665511.

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 1155664915 - 2³ = 1155664907 is a prime.

It is a super-2 number, since 2×1155664915² = 2671122791523914450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35881 + ... + 59989.

It is an arithmetic number, because the mean of its divisors is an integer number (173375010).

Almost surely, 2^1155664915 is an apocalyptic number.

1155664915 is a deficient number, since it is larger than the sum of its proper divisors (231335165).

1155664915 is an equidigital number, since it uses as much as digits as its factorization.

1155664915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33701.

The product of its digits is 162000, while the sum is 43.

The square root of 1155664915 is about 33995.0719222654. The cubic root of 1155664915 is about 1049.4070469205.

The spelling of 1155664915 in words is "one billion, one hundred fifty-five million, six hundred sixty-four thousand, nine hundred fifteen".