2068917138 has 54 divisors (see below), whose sum is σ = 4576988871. Its totient is φ = 675423000.

The previous prime is 2068917089. The next prime is 2068917143. The reversal of 2068917138 is 8317198602.

It can be written as a sum of positive squares in only one way, i.e., 1034458569 + 1034458569 = 32163^2 + 32163^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=32163.

It is a super-2 number, since 2×2068917138² = 8560836247820222088, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2068917093 and 2068917102.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13701363 + ... + 13701513.

Almost surely, 2^2068917138 is an apocalyptic number.

2068917138 is an abundant number, since it is smaller than the sum of its proper divisors (2508071733).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2068917138 is an equidigital number, since it uses as much as digits as its factorization.

2068917138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 2068917138 is about 45485.3508066059. The cubic root of 2068917138 is about 1274.2296282813.

The spelling of 2068917138 in words is "two billion, sixty-eight million, nine hundred seventeen thousand, one hundred thirty-eight".