1165116619 has 2 divisors, whose sum is σ = 1165116620. Its totient is φ = 1165116618.

The previous prime is 1165116599. The next prime is 1165116661. The reversal of 1165116619 is 9166115611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1165116619 - 2⁹ = 1165116107 is a prime.

It is a super-2 number, since 2×1165116619² = 2714993471739982322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1165116019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582558309 + 582558310.

It is an arithmetic number, because the mean of its divisors is an integer number (582558310).

Almost surely, 2^1165116619 is an apocalyptic number.

1165116619 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165116619 is an equidigital number, since it uses as much as digits as its factorization.

1165116619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 37.

The square root of 1165116619 is about 34133.8046370457. The cubic root of 1165116619 is about 1052.2601711496.

The spelling of 1165116619 in words is "one billion, one hundred sixty-five million, one hundred sixteen thousand, six hundred nineteen".