2637066842 has 4 divisors (see below), whose sum is σ = 3955600266. Its totient is φ = 1318533420.

The previous prime is 2637066841. The next prime is 2637066857. The reversal of 2637066842 is 2486607362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2486607362 = 2 ⋅1243303681.

It can be written as a sum of positive squares in only one way, i.e., 2635898281 + 1168561 = 51341^2 + 1081^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2637066793 and 2637066802.

It is not an unprimeable number, because it can be changed into a prime (2637066841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659266709 + ... + 659266712.

Almost surely, 2^2637066842 is an apocalyptic number.

2637066842 is a deficient number, since it is larger than the sum of its proper divisors (1318533424).

2637066842 is a wasteful number, since it uses less digits than its factorization.

2637066842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318533423.

The product of its (nonzero) digits is 580608, while the sum is 44.

The square root of 2637066842 is about 51352.3791269694. The cubic root of 2637066842 is about 1381.5726037159.

The spelling of 2637066842 in words is "two billion, six hundred thirty-seven million, sixty-six thousand, eight hundred forty-two".