185036013 has 6 divisors (see below), whose sum is σ = 267274254. Its totient is φ = 123357336.

The previous prime is 185035999. The next prime is 185036021. The reversal of 185036013 is 310630581.

185036013 is a `hidden beast` number, since 1 + 8 + 50 + 3 + 601 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 185014404 + 21609 = 13602^2 + 147^2 .

It is not a de Polignac number, because 185036013 - 2¹⁰ = 185034989 is a prime.

It is a super-2 number, since 2×185036013² = 68476652213872338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185036113) 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, 10279770 + ... + 10279787.

It is an arithmetic number, because the mean of its divisors is an integer number (44545709).

Almost surely, 2^185036013 is an apocalyptic number.

It is an amenable number.

185036013 is a deficient number, since it is larger than the sum of its proper divisors (82238241).

185036013 is a wasteful number, since it uses less digits than its factorization.

185036013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20559563 (or 20559560 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 185036013 is about 13602.7943085235. The cubic root of 185036013 is about 569.8388926030.

Adding to 185036013 its reverse (310630581), we get a palindrome (495666594).

The spelling of 185036013 in words is "one hundred eighty-five million, thirty-six thousand, thirteen".