1011685539 has 8 divisors (see below), whose sum is σ = 1349403840. Its totient is φ = 674212136.

The previous prime is 1011685531. The next prime is 1011685573. The reversal of 1011685539 is 9355861101.

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 1011685539 - 2³ = 1011685531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011685497 and 1011685506.

It is not an unprimeable number, because it can be changed into a prime (1011685531) 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, 51357 + ... + 68270.

It is an arithmetic number, because the mean of its divisors is an integer number (168675480).

Almost surely, 2^1011685539 is an apocalyptic number.

1011685539 is a deficient number, since it is larger than the sum of its proper divisors (337718301).

1011685539 is a wasteful number, since it uses less digits than its factorization.

1011685539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122449.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 1011685539 is about 31807.0045587446. The cubic root of 1011685539 is about 1003.8801049801.

The spelling of 1011685539 in words is "one billion, eleven million, six hundred eighty-five thousand, five hundred thirty-nine".