3781816474524 has 48 divisors (see below), whose sum is σ = 9626555828736. Its totient is φ = 1145991433600.

The previous prime is 3781816474519. The next prime is 3781816474537. The reversal of 3781816474524 is 4254746181873.

It is a super-2 number, since 2×3781816474524² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21141949 + ... + 21320075.

It is an arithmetic number, because the mean of its divisors is an integer number (200553246432).

Almost surely, 2^{3781816474524} is an apocalyptic number.

It is an amenable number.

3781816474524 is an abundant number, since it is smaller than the sum of its proper divisors (5844739354212).

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

3781816474524 is a wasteful number, since it uses less digits than its factorization.

3781816474524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338986 (or 338984 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 60.

The spelling of 3781816474524 in words is "three trillion, seven hundred eighty-one billion, eight hundred sixteen million, four hundred seventy-four thousand, five hundred twenty-four".