3945254927838 has 64 divisors (see below), whose sum is σ = 9492620666880. Its totient is φ = 1067857279200.

The previous prime is 3945254927837. The next prime is 3945254927893. The reversal of 3945254927838 is 8387294525493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945254927833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43981653 + ... + 44071263.

It is an arithmetic number, because the mean of its divisors is an integer number (148322197920).

Almost surely, 2^{3945254927838} is an apocalyptic number.

3945254927838 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3945254927838 is an abundant number, since it is smaller than the sum of its proper divisors (5547365739042).

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

3945254927838 is a wasteful number, since it uses less digits than its factorization.

3945254927838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144813.

The product of its digits is 522547200, while the sum is 69.

The spelling of 3945254927838 in words is "three trillion, nine hundred forty-five billion, two hundred fifty-four million, nine hundred twenty-seven thousand, eight hundred thirty-eight".