40018037 has 2 divisors, whose sum is σ = 40018038. Its totient is φ = 40018036.

The previous prime is 40018031. The next prime is 40018039. The reversal of 40018037 is 73081004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24344356 + 15673681 = 4934^2 + 3959^2 .

It is a cyclic number.

It is not a de Polignac number, because 40018037 - 2¹⁶ = 39952501 is a prime.

Together with 40018039, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40018031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20009018 + 20009019.

It is an arithmetic number, because the mean of its divisors is an integer number (20009019).

Almost surely, 2^40018037 is an apocalyptic number.

It is an amenable number.

40018037 is a deficient number, since it is larger than the sum of its proper divisors (1).

40018037 is an equidigital number, since it uses as much as digits as its factorization.

40018037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 40018037 is about 6325.9811096778. The cubic root of 40018037 is about 342.0465863376.

The spelling of 40018037 in words is "forty million, eighteen thousand, thirty-seven".