3818218404040 has 32 divisors (see below), whose sum is σ = 8753085591480. Its totient is φ = 1498470618112.

The previous prime is 3818218404031. The next prime is 3818218404053. The reversal of 3818218404040 is 404048128183.

It can be written as a sum of positive squares in 4 ways, for example, as 2781043181316 + 1037175222724 = 1667646^2 + 1018418^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900521089 + ... + 900525328.

Almost surely, 2^{3818218404040} is an apocalyptic number.

It is an amenable number.

3818218404040 is an abundant number, since it is smaller than the sum of its proper divisors (4934867187440).

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

3818218404040 is a wasteful number, since it uses less digits than its factorization.

3818218404040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801046481 (or 1801046477 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 43.

The spelling of 3818218404040 in words is "three trillion, eight hundred eighteen billion, two hundred eighteen million, four hundred four thousand, forty".