3837445387840 has 56 divisors (see below), whose sum is σ = 9159020894520. Its totient is φ = 1531433115648.

The previous prime is 3837445387813. The next prime is 3837445387861. The reversal of 3837445387840 is 487835447383.

It can be written as a sum of positive squares in 4 ways, for example, as 345151550016 + 3492293837824 = 587496^2 + 1868768^2 .

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 13709035 + ... + 13986154.

It is an arithmetic number, because the mean of its divisors is an integer number (163553944545).

Almost surely, 2^{3837445387840} is an apocalyptic number.

It is an amenable number.

3837445387840 is an abundant number, since it is smaller than the sum of its proper divisors (5321575506680).

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

3837445387840 is a wasteful number, since it uses less digits than its factorization.

3837445387840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27695639 (or 27695629 counting only the distinct ones).

The product of its (nonzero) digits is 216760320, while the sum is 64.

The spelling of 3837445387840 in words is "three trillion, eight hundred thirty-seven billion, four hundred forty-five million, three hundred eighty-seven thousand, eight hundred forty".