39516948937 has 2 divisors, whose sum is σ = 39516948938. Its totient is φ = 39516948936.

The previous prime is 39516948907. The next prime is 39516948973. The reversal of 39516948937 is 73984961593.

Together with next prime (39516948973) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30960513936 + 8556435001 = 175956^2 + 92501^2 .

It is a cyclic number.

It is not a de Polignac number, because 39516948937 - 2²⁷ = 39382731209 is a prime.

It is not a weakly prime, because it can be changed into another prime (39516948907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19758474468 + 19758474469.

It is an arithmetic number, because the mean of its divisors is an integer number (19758474469).

Almost surely, 2^39516948937 is an apocalyptic number.

It is an amenable number.

39516948937 is a deficient number, since it is larger than the sum of its proper divisors (1).

39516948937 is an equidigital number, since it uses as much as digits as its factorization.

39516948937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44089920, while the sum is 64.

The spelling of 39516948937 in words is "thirty-nine billion, five hundred sixteen million, nine hundred forty-eight thousand, nine hundred thirty-seven".