40181107 has 4 divisors (see below), whose sum is σ = 41161176. Its totient is φ = 39201040.

The previous prime is 40181093. The next prime is 40181111. The reversal of 40181107 is 70118104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40181107 is a prime.

It is a super-2 number, since 2×40181107² = 3229042719490898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40181117) 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, 489973 + ... + 490054.

It is an arithmetic number, because the mean of its divisors is an integer number (10290294).

Almost surely, 2^40181107 is an apocalyptic number.

40181107 is a deficient number, since it is larger than the sum of its proper divisors (980069).

40181107 is an equidigital number, since it uses as much as digits as its factorization.

40181107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980068.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 40181107 is about 6338.8569158800. The cubic root of 40181107 is about 342.5105599955.

The spelling of 40181107 in words is "forty million, one hundred eighty-one thousand, one hundred seven".