1149216665 has 8 divisors (see below), whose sum is σ = 1381699968. Its totient is φ = 917613360.

The previous prime is 1149216641. The next prime is 1149216703. The reversal of 1149216665 is 5666129411.

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

It is not a de Polignac number, because 1149216665 - 2¹² = 1149212569 is a prime.

It is a super-2 number, since 2×1149216665² = 2641397886227444450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217121 + ... + 222350.

It is an arithmetic number, because the mean of its divisors is an integer number (172712496).

Almost surely, 2^1149216665 is an apocalyptic number.

It is an amenable number.

1149216665 is a deficient number, since it is larger than the sum of its proper divisors (232483303).

1149216665 is an equidigital number, since it uses as much as digits as its factorization.

1149216665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439999.

The product of its digits is 77760, while the sum is 41.

The square root of 1149216665 is about 33900.0983036923. The cubic root of 1149216665 is about 1047.4516174303.

The spelling of 1149216665 in words is "one billion, one hundred forty-nine million, two hundred sixteen thousand, six hundred sixty-five".