1168478537 has 4 divisors (see below), whose sum is σ = 1200059076. Its totient is φ = 1136898000.

The previous prime is 1168478489. The next prime is 1168478569. The reversal of 1168478537 is 7358748611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7358748611 = 163 ⋅45145697.

It can be written as a sum of positive squares in 2 ways, for example, as 820879801 + 347598736 = 28651^2 + 18644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1168478537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1168472537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15790214 + ... + 15790287.

It is an arithmetic number, because the mean of its divisors is an integer number (300014769).

Almost surely, 2^1168478537 is an apocalyptic number.

It is an amenable number.

1168478537 is a deficient number, since it is larger than the sum of its proper divisors (31580539).

1168478537 is an equidigital number, since it uses as much as digits as its factorization.

1168478537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31580538.

The product of its digits is 1128960, while the sum is 50.

The square root of 1168478537 is about 34183.0153292538. The cubic root of 1168478537 is about 1053.2712903312.

The spelling of 1168478537 in words is "one billion, one hundred sixty-eight million, four hundred seventy-eight thousand, five hundred thirty-seven".