5634640159 has 4 divisors (see below), whose sum is σ = 5714001360. Its totient is φ = 5555278960.

The previous prime is 5634640153. The next prime is 5634640163. The reversal of 5634640159 is 9510464365.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9510464365 = 5 ⋅1902092873.

It is a cyclic number.

It is not a de Polignac number, because 5634640159 - 2¹¹ = 5634638111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5634640153) 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, 39680494 + ... + 39680635.

It is an arithmetic number, because the mean of its divisors is an integer number (1428500340).

Almost surely, 2^5634640159 is an apocalyptic number.

5634640159 is a deficient number, since it is larger than the sum of its proper divisors (79361201).

5634640159 is an equidigital number, since it uses as much as digits as its factorization.

5634640159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79361200.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 5634640159 is about 75064.2402146322. The cubic root of 5634640159 is about 1779.4620432788.

The spelling of 5634640159 in words is "five billion, six hundred thirty-four million, six hundred forty thousand, one hundred fifty-nine".