37715281913 has 2 divisors, whose sum is σ = 37715281914. Its totient is φ = 37715281912.

The previous prime is 37715281873. The next prime is 37715281931. The reversal of 37715281913 is 31918251773.

It is a happy number.

Together with next prime (37715281931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33755977984 + 3959303929 = 183728^2 + 62923^2 .

It is an emirp because it is prime and its reverse (31918251773) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37715281913 - 2⁸ = 37715281657 is a prime.

It is not a weakly prime, because it can be changed into another prime (37715281963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18857640956 + 18857640957.

It is an arithmetic number, because the mean of its divisors is an integer number (18857640957).

Almost surely, 2^37715281913 is an apocalyptic number.

It is an amenable number.

37715281913 is a deficient number, since it is larger than the sum of its proper divisors (1).

37715281913 is an equidigital number, since it uses as much as digits as its factorization.

37715281913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 47.

The spelling of 37715281913 in words is "thirty-seven billion, seven hundred fifteen million, two hundred eighty-one thousand, nine hundred thirteen".