37742424749 has 2 divisors, whose sum is σ = 37742424750. Its totient is φ = 37742424748.

The previous prime is 37742424743. The next prime is 37742424773. The reversal of 37742424749 is 94742424773.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36588803524 + 1153621225 = 191282^2 + 33965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37742424749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 37742424749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37742424743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18871212374 + 18871212375.

It is an arithmetic number, because the mean of its divisors is an integer number (18871212375).

Almost surely, 2^37742424749 is an apocalyptic number.

It is an amenable number.

37742424749 is a deficient number, since it is larger than the sum of its proper divisors (1).

37742424749 is an equidigital number, since it uses as much as digits as its factorization.

37742424749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9483264, while the sum is 53.

The spelling of 37742424749 in words is "thirty-seven billion, seven hundred forty-two million, four hundred twenty-four thousand, seven hundred forty-nine".