40163745 has 8 divisors (see below), whose sum is σ = 64262016. Its totient is φ = 21420656.

The previous prime is 40163743. The next prime is 40163749. The reversal of 40163745 is 54736104.

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

It is a cyclic number.

It is not a de Polignac number, because 40163745 - 2¹ = 40163743 is a prime.

It is a super-2 number, since 2×40163745² = 3226252824850050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40163743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338777 + ... + 1338806.

It is an arithmetic number, because the mean of its divisors is an integer number (8032752).

Almost surely, 2^40163745 is an apocalyptic number.

It is an amenable number.

40163745 is a deficient number, since it is larger than the sum of its proper divisors (24098271).

40163745 is a wasteful number, since it uses less digits than its factorization.

40163745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677591.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 40163745 is about 6337.4872780937. The cubic root of 40163745 is about 342.4612206791.

Adding to 40163745 its reverse (54736104), we get a palindrome (94899849).

It can be divided in two parts, 401 and 63745, that added together give a palindrome (64146).

The spelling of 40163745 in words is "forty million, one hundred sixty-three thousand, seven hundred forty-five".