3818393279064 has 384 divisors, whose sum is σ = 13152820961280. Its totient is φ = 973505433600.

The previous prime is 3818393279053. The next prime is 3818393279117. The reversal of 3818393279064 is 4609723938183.

3818393279064 is a `hidden beast` number, since 3 + 81 + 8 + 393 + 27 + 90 + 64 = 666.

It is a super-2 number, since 2×3818393279064² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 3818393278992 and 3818393279010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 196399584 + ... + 196419024.

It is an arithmetic number, because the mean of its divisors is an integer number (34252137920).

Almost surely, 2^{3818393279064} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3818393279064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6576410480640).

3818393279064 is an abundant number, since it is smaller than the sum of its proper divisors (9334427682216).

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

3818393279064 is a wasteful number, since it uses less digits than its factorization.

3818393279064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20471 (or 20464 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 3818393279064 in words is "three trillion, eight hundred eighteen billion, three hundred ninety-three million, two hundred seventy-nine thousand, sixty-four".