39613235197 has 2 divisors, whose sum is σ = 39613235198. Its totient is φ = 39613235196.

The previous prime is 39613235191. The next prime is 39613235209. The reversal of 39613235197 is 79153231693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30445364196 + 9167871001 = 174486^2 + 95749^2 .

It is a cyclic number.

It is not a de Polignac number, because 39613235197 - 2³¹ = 37465751549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39613235197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39613235191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19806617598 + 19806617599.

It is an arithmetic number, because the mean of its divisors is an integer number (19806617599).

Almost surely, 2^39613235197 is an apocalyptic number.

It is an amenable number.

39613235197 is a deficient number, since it is larger than the sum of its proper divisors (1).

39613235197 is an equidigital number, since it uses as much as digits as its factorization.

39613235197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 49.

The spelling of 39613235197 in words is "thirty-nine billion, six hundred thirteen million, two hundred thirty-five thousand, one hundred ninety-seven".