40181441018 has 8 divisors (see below), whose sum is σ = 60292889460. Its totient is φ = 20083811200.

The previous prime is 40181441017. The next prime is 40181441023. The reversal of 40181441018 is 81014418104.

It can be written as a sum of positive squares in 2 ways, for example, as 29428373209 + 10753067809 = 171547^2 + 103697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40181441018² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40181441017) 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, 3447383 + ... + 3459018.

Almost surely, 2^40181441018 is an apocalyptic number.

40181441018 is a deficient number, since it is larger than the sum of its proper divisors (20111448442).

40181441018 is a wasteful number, since it uses less digits than its factorization.

40181441018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909312.

The product of its (nonzero) digits is 4096, while the sum is 32.

The spelling of 40181441018 in words is "forty billion, one hundred eighty-one million, four hundred forty-one thousand, eighteen".