1068117157 has 8 divisors (see below), whose sum is σ = 1131394392. Its totient is φ = 1004889600.

The previous prime is 1068117139. The next prime is 1068117173. The reversal of 1068117157 is 7517118601.

It can be written as a sum of positive squares in 4 ways, for example, as 468895716 + 599221441 = 21654^2 + 24479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1068117157 is a prime.

It is a super-2 number, since 2×1068117157² = 2281748522155525298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068111157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37657 + ... + 59617.

It is an arithmetic number, because the mean of its divisors is an integer number (141424299).

Almost surely, 2^1068117157 is an apocalyptic number.

1068117157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1068117157 is a deficient number, since it is larger than the sum of its proper divisors (63277235).

1068117157 is a wasteful number, since it uses less digits than its factorization.

1068117157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24839.

The product of its (nonzero) digits is 11760, while the sum is 37.

The square root of 1068117157 is about 32682.0617005721. The cubic root of 1068117157 is about 1022.2088352641.

The spelling of 1068117157 in words is "one billion, sixty-eight million, one hundred seventeen thousand, one hundred fifty-seven".