40218287238 has 16 divisors (see below), whose sum is σ = 89373971760. Its totient is φ = 13406095728.

The previous prime is 40218287237. The next prime is 40218287243. The reversal of 40218287238 is 83278281204.

40218287238 is a `hidden beast` number, since 402 + 1 + 8 + 2 + 8 + 7 + 238 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 40218287193 and 40218287202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40218287231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372391495 + ... + 372391602.

It is an arithmetic number, because the mean of its divisors is an integer number (5585873235).

Almost surely, 2^40218287238 is an apocalyptic number.

40218287238 is an abundant number, since it is smaller than the sum of its proper divisors (49155684522).

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

40218287238 is a wasteful number, since it uses less digits than its factorization.

40218287238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744783108 (or 744783102 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 40218287238 in words is "forty billion, two hundred eighteen million, two hundred eighty-seven thousand, two hundred thirty-eight".