37649428829 has 2 divisors, whose sum is σ = 37649428830. Its totient is φ = 37649428828.

The previous prime is 37649428799. The next prime is 37649428897. The reversal of 37649428829 is 92882494673.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33501811225 + 4147617604 = 183035^2 + 64402^2 .

It is a cyclic number.

It is not a de Polignac number, because 37649428829 - 2¹² = 37649424733 is a prime.

It is a super-2 number, since 2×37649428829² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37649428129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18824714414 + 18824714415.

It is an arithmetic number, because the mean of its divisors is an integer number (18824714415).

Almost surely, 2^37649428829 is an apocalyptic number.

It is an amenable number.

37649428829 is a deficient number, since it is larger than the sum of its proper divisors (1).

37649428829 is an equidigital number, since it uses as much as digits as its factorization.

37649428829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 62.

The spelling of 37649428829 in words is "thirty-seven billion, six hundred forty-nine million, four hundred twenty-eight thousand, eight hundred twenty-nine".