37149687749 has 2 divisors, whose sum is σ = 37149687750. Its totient is φ = 37149687748.

The previous prime is 37149687739. The next prime is 37149687811. The reversal of 37149687749 is 94778694173.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36563176225 + 586511524 = 191215^2 + 24218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37149687749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37149687719) 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, 18574843874 + 18574843875.

It is an arithmetic number, because the mean of its divisors is an integer number (18574843875).

Almost surely, 2^37149687749 is an apocalyptic number.

It is an amenable number.

37149687749 is a deficient number, since it is larger than the sum of its proper divisors (1).

37149687749 is an equidigital number, since it uses as much as digits as its factorization.

37149687749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64012032, while the sum is 65.

The spelling of 37149687749 in words is "thirty-seven billion, one hundred forty-nine million, six hundred eighty-seven thousand, seven hundred forty-nine".