3945748048139 has 2 divisors, whose sum is σ = 3945748048140. Its totient is φ = 3945748048138.

The previous prime is 3945748048117. The next prime is 3945748048147. The reversal of 3945748048139 is 9318408475493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3945748048139 - 2³² = 3941453080843 is a prime.

It is a super-2 number, since 2×3945748048139² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3945748048159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972874024069 + 1972874024070.

It is an arithmetic number, because the mean of its divisors is an integer number (1972874024070).

Almost surely, 2^{3945748048139} is an apocalyptic number.

3945748048139 is a deficient number, since it is larger than the sum of its proper divisors (1).

3945748048139 is an equidigital number, since it uses as much as digits as its factorization.

3945748048139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104509440, while the sum is 65.

The spelling of 3945748048139 in words is "three trillion, nine hundred forty-five billion, seven hundred forty-eight million, forty-eight thousand, one hundred thirty-nine".