40518414 has 32 divisors (see below), whose sum is σ = 92242080. Its totient is φ = 13176000.

The previous prime is 40518409. The next prime is 40518419. The reversal of 40518414 is 41481504.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40518409) and next prime (40518419).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40518419) 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 in 15 ways as a sum of consecutive naturals, for example, 6937 + ... + 11364.

It is an arithmetic number, because the mean of its divisors is an integer number (2882565).

Almost surely, 2^40518414 is an apocalyptic number.

40518414 is an abundant number, since it is smaller than the sum of its proper divisors (51723666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40518414 is a wasteful number, since it uses less digits than its factorization.

40518414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18353 (or 18347 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 40518414 is about 6365.4076067444. The cubic root of 40518414 is about 343.4663112210.

Adding to 40518414 its reverse (41481504), we get a palindrome (81999918).

The spelling of 40518414 in words is "forty million, five hundred eighteen thousand, four hundred fourteen".