5637398549 has 4 divisors (see below), whose sum is σ = 5639499264. Its totient is φ = 5635297836.

The previous prime is 5637398491. The next prime is 5637398561. The reversal of 5637398549 is 9458937365.

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.

It is a cyclic number.

It is not a de Polignac number, because 5637398549 - 2⁸ = 5637398293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5637398149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046327 + ... + 1051700.

It is an arithmetic number, because the mean of its divisors is an integer number (1409874816).

Almost surely, 2^5637398549 is an apocalyptic number.

It is an amenable number.

5637398549 is a deficient number, since it is larger than the sum of its proper divisors (2100715).

5637398549 is a wasteful number, since it uses less digits than its factorization.

5637398549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100714.

The product of its digits is 24494400, while the sum is 59.

The square root of 5637398549 is about 75082.6114956053. The cubic root of 5637398549 is about 1779.7523693938.

The spelling of 5637398549 in words is "five billion, six hundred thirty-seven million, three hundred ninety-eight thousand, five hundred forty-nine".