40180013 has 4 divisors (see below), whose sum is σ = 40197600. Its totient is φ = 40162428.

The previous prime is 40179983. The next prime is 40180031. The reversal of 40180013 is 31008104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40180013 - 2¹⁰ = 40178989 is a prime.

It is a super-2 number, since 2×40180013² = 3228866889360338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40179973 and 40180000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40180073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4745 + ... + 10142.

It is an arithmetic number, because the mean of its divisors is an integer number (10049400).

Almost surely, 2^40180013 is an apocalyptic number.

It is an amenable number.

40180013 is a deficient number, since it is larger than the sum of its proper divisors (17587).

40180013 is a wasteful number, since it uses less digits than its factorization.

40180013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17586.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 40180013 is about 6338.7706221317. The cubic root of 40180013 is about 342.5074514869.

Adding to 40180013 its reverse (31008104), we get a palindrome (71188117).

The spelling of 40180013 in words is "forty million, one hundred eighty thousand, thirteen".