3818534826915 has 48 divisors (see below), whose sum is σ = 6704529686400. Its totient is φ = 2010186637056.

The previous prime is 3818534826901. The next prime is 3818534826923. The reversal of 3818534826915 is 5196284358183.

3818534826915 is a `hidden beast` number, since 3 + 8 + 1 + 8 + 534 + 8 + 2 + 6 + 91 + 5 = 666.

It is not a de Polignac number, because 3818534826915 - 2²⁵ = 3818501272483 is a prime.

It is a super-3 number, since 3×3818534826915³ (a number of 39 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12177477 + ... + 12487113.

It is an arithmetic number, because the mean of its divisors is an integer number (139677701800).

Almost surely, 2^{3818534826915} is an apocalyptic number.

3818534826915 is a deficient number, since it is larger than the sum of its proper divisors (2885994859485).

3818534826915 is a wasteful number, since it uses less digits than its factorization.

3818534826915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313196 (or 313193 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 63.

The spelling of 3818534826915 in words is "three trillion, eight hundred eighteen billion, five hundred thirty-four million, eight hundred twenty-six thousand, nine hundred fifteen".