1013611986 has 12 divisors (see below), whose sum is σ = 2196159342. Its totient is φ = 337870656.

The previous prime is 1013611913. The next prime is 1013611987. The reversal of 1013611986 is 6891163101.

It is a happy number.

1013611986 is a `hidden beast` number, since 101 + 361 + 198 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 594140625 + 419471361 = 24375^2 + 20481^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1013611986.

It is not an unprimeable number, because it can be changed into a prime (1013611987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28155871 + ... + 28155906.

Almost surely, 2^1013611986 is an apocalyptic number.

1013611986 is an abundant number, since it is smaller than the sum of its proper divisors (1182547356).

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

1013611986 is a wasteful number, since it uses less digits than its factorization.

1013611986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56311785 (or 56311782 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1013611986 is about 31837.2735327634. The cubic root of 1013611986 is about 1004.5168956024.

It can be divided in two parts, 10136 and 11986, that added together give a palindrome (22122).

The spelling of 1013611986 in words is "one billion, thirteen million, six hundred eleven thousand, nine hundred eighty-six".