3945748048117 has 2 divisors, whose sum is σ = 3945748048118. Its totient is φ = 3945748048116.

The previous prime is 3945748048013. The next prime is 3945748048139. The reversal of 3945748048117 is 7118408475493.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3444294286161 + 501453761956 = 1855881^2 + 708134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3945748048117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3945748048147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972874024058 + 1972874024059.

It is an arithmetic number, because the mean of its divisors is an integer number (1972874024059).

Almost surely, 2^{3945748048117} is an apocalyptic number.

It is an amenable number.

3945748048117 is a deficient number, since it is larger than the sum of its proper divisors (1).

3945748048117 is an equidigital number, since it uses as much as digits as its factorization.

3945748048117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 3945748048117 in words is "three trillion, nine hundred forty-five billion, seven hundred forty-eight million, forty-eight thousand, one hundred seventeen".