37875387449 has 2 divisors, whose sum is σ = 37875387450. Its totient is φ = 37875387448.

The previous prime is 37875387413. The next prime is 37875387457. The reversal of 37875387449 is 94478357873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37148707600 + 726679849 = 192740^2 + 26957^2 .

It is an emirp because it is prime and its reverse (94478357873) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37875387449 is a prime.

It is not a weakly prime, because it can be changed into another prime (37875387469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18937693724 + 18937693725.

It is an arithmetic number, because the mean of its divisors is an integer number (18937693725).

Almost surely, 2^37875387449 is an apocalyptic number.

It is an amenable number.

37875387449 is a deficient number, since it is larger than the sum of its proper divisors (1).

37875387449 is an equidigital number, since it uses as much as digits as its factorization.

37875387449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142248960, while the sum is 65.

The spelling of 37875387449 in words is "thirty-seven billion, eight hundred seventy-five million, three hundred eighty-seven thousand, four hundred forty-nine".