37751939749 has 2 divisors, whose sum is σ = 37751939750. Its totient is φ = 37751939748.

The previous prime is 37751939747. The next prime is 37751939791. The reversal of 37751939749 is 94793915773.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36014550625 + 1737389124 = 189775^2 + 41682^2 .

It is a cyclic number.

It is not a de Polignac number, because 37751939749 - 2¹ = 37751939747 is a prime.

Together with 37751939747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37751939747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18875969874 + 18875969875.

It is an arithmetic number, because the mean of its divisors is an integer number (18875969875).

Almost surely, 2^37751939749 is an apocalyptic number.

It is an amenable number.

37751939749 is a deficient number, since it is larger than the sum of its proper divisors (1).

37751939749 is an equidigital number, since it uses as much as digits as its factorization.

37751939749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45008460, while the sum is 64.

The spelling of 37751939749 in words is "thirty-seven billion, seven hundred fifty-one million, nine hundred thirty-nine thousand, seven hundred forty-nine".