3856492691040 has 96 divisors (see below), whose sum is σ = 13252311265536. Its totient is φ = 934907317760.

The previous prime is 3856492691021. The next prime is 3856492691059. The reversal of 3856492691040 is 401962946583.

It is an interprime number because it is at equal distance from previous prime (3856492691021) and next prime (3856492691059).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365192892 + ... + 365203451.

It is an arithmetic number, because the mean of its divisors is an integer number (138044909016).

Almost surely, 2^{3856492691040} is an apocalyptic number.

3856492691040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3856492691040 is an abundant number, since it is smaller than the sum of its proper divisors (9395818574496).

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

3856492691040 is a wasteful number, since it uses less digits than its factorization.

3856492691040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730396372 (or 730396364 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 3856492691040 in words is "three trillion, eight hundred fifty-six billion, four hundred ninety-two million, six hundred ninety-one thousand, forty".