1165170623 has 2 divisors, whose sum is σ = 1165170624. Its totient is φ = 1165170622.

The previous prime is 1165170581. The next prime is 1165170631. The reversal of 1165170623 is 3260715611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1165170623 - 2²⁶ = 1098061759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1165170623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1165170023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582585311 + 582585312.

It is an arithmetic number, because the mean of its divisors is an integer number (582585312).

Almost surely, 2^1165170623 is an apocalyptic number.

1165170623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165170623 is an equidigital number, since it uses as much as digits as its factorization.

1165170623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1165170623 is about 34134.5956911753. The cubic root of 1165170623 is about 1052.2764285724.

The spelling of 1165170623 in words is "one billion, one hundred sixty-five million, one hundred seventy thousand, six hundred twenty-three".