5638396145 has 16 divisors (see below), whose sum is σ = 7012719120. Its totient is φ = 4348525824.

The previous prime is 5638396121. The next prime is 5638396177. The reversal of 5638396145 is 5416938365.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1307834896 + 4330561249 = 36164^2 + 65807^2 .

It is a cyclic number.

It is not a de Polignac number, because 5638396145 - 2¹² = 5638392049 is a prime.

It is a super-2 number, since 2×5638396145² = 63583022175901722050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5638396093 and 5638396102.

It is an unprimeable number.

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, 119642 + ... + 159971.

It is an arithmetic number, because the mean of its divisors is an integer number (438294945).

Almost surely, 2^5638396145 is an apocalyptic number.

It is an amenable number.

5638396145 is a deficient number, since it is larger than the sum of its proper divisors (1374322975).

5638396145 is a wasteful number, since it uses less digits than its factorization.

5638396145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279764.

The product of its digits is 2332800, while the sum is 50.

The square root of 5638396145 is about 75089.2545241994. The cubic root of 5638396145 is about 1779.8573450671.

The spelling of 5638396145 in words is "five billion, six hundred thirty-eight million, three hundred ninety-six thousand, one hundred forty-five".