5638268901 has 4 divisors (see below), whose sum is σ = 7517691872. Its totient is φ = 3758845932.

The previous prime is 5638268897. The next prime is 5638268963. The reversal of 5638268901 is 1098628365.

It is a happy number.

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 not a de Polignac number, because 5638268901 - 2² = 5638268897 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 (5638268201) 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, 939711481 + ... + 939711486.

It is an arithmetic number, because the mean of its divisors is an integer number (1879422968).

Almost surely, 2^5638268901 is an apocalyptic number.

It is an amenable number.

5638268901 is a deficient number, since it is larger than the sum of its proper divisors (1879422971).

5638268901 is a wasteful number, since it uses less digits than its factorization.

5638268901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879422970.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 5638268901 is about 75088.4072344060. The cubic root of 5638268901 is about 1779.8439560426.

The spelling of 5638268901 in words is "five billion, six hundred thirty-eight million, two hundred sixty-eight thousand, nine hundred one".