40818907 has 2 divisors, whose sum is σ = 40818908. Its totient is φ = 40818906.

The previous prime is 40818857. The next prime is 40818919. The reversal of 40818907 is 70981804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40818907 - 2¹¹ = 40816859 is a prime.

It is not a weakly prime, because it can be changed into another prime (40818977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20409453 + 20409454.

It is an arithmetic number, because the mean of its divisors is an integer number (20409454).

Almost surely, 2^40818907 is an apocalyptic number.

40818907 is a deficient number, since it is larger than the sum of its proper divisors (1).

40818907 is an equidigital number, since it uses as much as digits as its factorization.

40818907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 40818907 is about 6388.9676004813. The cubic root of 40818907 is about 344.3132934345.

The spelling of 40818907 in words is "forty million, eight hundred eighteen thousand, nine hundred seven".