37840513393 has 2 divisors, whose sum is σ = 37840513394. Its totient is φ = 37840513392.

The previous prime is 37840513363. The next prime is 37840513409. The reversal of 37840513393 is 39331504873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21877959744 + 15962553649 = 147912^2 + 126343^2 .

It is a cyclic number.

It is not a de Polignac number, because 37840513393 - 2²⁵ = 37806958961 is a prime.

It is not a weakly prime, because it can be changed into another prime (37840513363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18920256696 + 18920256697.

It is an arithmetic number, because the mean of its divisors is an integer number (18920256697).

Almost surely, 2^37840513393 is an apocalyptic number.

It is an amenable number.

37840513393 is a deficient number, since it is larger than the sum of its proper divisors (1).

37840513393 is an equidigital number, since it uses as much as digits as its factorization.

37840513393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 37840513393 in words is "thirty-seven billion, eight hundred forty million, five hundred thirteen thousand, three hundred ninety-three".