1165208513 has 8 divisors (see below), whose sum is σ = 1332928128. Its totient is φ = 997804224.

The previous prime is 1165208503. The next prime is 1165208567. The reversal of 1165208513 is 3158025611.

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 1165208513 - 2¹⁴ = 1165192129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1165208513.

It is not an unprimeable number, because it can be changed into a prime (1165208503) 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, 70856 + ... + 85737.

It is an arithmetic number, because the mean of its divisors is an integer number (166616016).

Almost surely, 2^1165208513 is an apocalyptic number.

It is an amenable number.

1165208513 is a deficient number, since it is larger than the sum of its proper divisors (167719615).

1165208513 is a wasteful number, since it uses less digits than its factorization.

1165208513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157663.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1165208513 is about 34135.1506954342. The cubic root of 1165208513 is about 1052.2878347192.

The spelling of 1165208513 in words is "one billion, one hundred sixty-five million, two hundred eight thousand, five hundred thirteen".