37637652649 has 4 divisors (see below), whose sum is σ = 37638291600. Its totient is φ = 37637013700.

The previous prime is 37637652629. The next prime is 37637652671. The reversal of 37637652649 is 94625673673.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94625673673 = 97 ⋅975522409.

It is a cyclic number.

It is not a de Polignac number, because 37637652649 - 2¹⁷ = 37637521577 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 37637652593 and 37637652602.

It is not an unprimeable number, because it can be changed into a prime (37637652629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220999 + ... + 352300.

It is an arithmetic number, because the mean of its divisors is an integer number (9409572900).

Almost surely, 2^37637652649 is an apocalyptic number.

It is an amenable number.

37637652649 is a deficient number, since it is larger than the sum of its proper divisors (638951).

37637652649 is an equidigital number, since it uses as much as digits as its factorization.

37637652649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638950.

The product of its digits is 34292160, while the sum is 58.

It can be divided in two parts, 376376 and 52649, that added together give a square (429025 = 655²).

The spelling of 37637652649 in words is "thirty-seven billion, six hundred thirty-seven million, six hundred fifty-two thousand, six hundred forty-nine".