5638401670 has 32 divisors (see below), whose sum is σ = 11259440640. Its totient is φ = 2015574240.

The previous prime is 5638401653. The next prime is 5638401673. The reversal of 5638401670 is 761048365.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638401673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427902 + ... + 440881.

It is an arithmetic number, because the mean of its divisors is an integer number (351857520).

Almost surely, 2^5638401670 is an apocalyptic number.

5638401670 is a deficient number, since it is larger than the sum of its proper divisors (5621038970).

5638401670 is a wasteful number, since it uses less digits than its factorization.

5638401670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868860.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 5638401670 is about 75089.2913137419. The cubic root of 5638401670 is about 1779.8579264209.

The spelling of 5638401670 in words is "five billion, six hundred thirty-eight million, four hundred one thousand, six hundred seventy".