1165309353187 has 16 divisors (see below), whose sum is σ = 1410162436800. Its totient is φ = 940054699008.

The previous prime is 1165309353157. The next prime is 1165309353209. The reversal of 1165309353187 is 7813539035611.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1165309353187 - 2¹⁹ = 1165308828899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165309353157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4777743 + ... + 5015719.

It is an arithmetic number, because the mean of its divisors is an integer number (88135152300).

Almost surely, 2^{1165309353187} is an apocalyptic number.

1165309353187 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1165309353187 is a deficient number, since it is larger than the sum of its proper divisors (244853083613).

1165309353187 is a wasteful number, since it uses less digits than its factorization.

1165309353187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279150.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 1165309353187 in words is "one trillion, one hundred sixty-five billion, three hundred nine million, three hundred fifty-three thousand, one hundred eighty-seven".