37985172493 has 2 divisors, whose sum is σ = 37985172494. Its totient is φ = 37985172492.

The previous prime is 37985172479. The next prime is 37985172529. The reversal of 37985172493 is 39427158973.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20709224649 + 17275947844 = 143907^2 + 131438^2 .

It is a cyclic number.

It is not a de Polignac number, because 37985172493 - 2⁹ = 37985171981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37985172413) 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, 18992586246 + 18992586247.

It is an arithmetic number, because the mean of its divisors is an integer number (18992586247).

Almost surely, 2^37985172493 is an apocalyptic number.

It is an amenable number.

37985172493 is a deficient number, since it is larger than the sum of its proper divisors (1).

37985172493 is an equidigital number, since it uses as much as digits as its factorization.

37985172493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 58.

The spelling of 37985172493 in words is "thirty-seven billion, nine hundred eighty-five million, one hundred seventy-two thousand, four hundred ninety-three".