9838621365 has 32 divisors (see below), whose sum is σ = 15990708096. Its totient is φ = 5164431360.

The previous prime is 9838621349. The next prime is 9838621367. The reversal of 9838621365 is 5631268389.

It is a happy number.

It is not a de Polignac number, because 9838621365 - 2⁴ = 9838621349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9838621367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1364209 + ... + 1371401.

It is an arithmetic number, because the mean of its divisors is an integer number (499709628).

Almost surely, 2^9838621365 is an apocalyptic number.

It is an amenable number.

9838621365 is a deficient number, since it is larger than the sum of its proper divisors (6152086731).

9838621365 is a wasteful number, since it uses less digits than its factorization.

9838621365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8629.

The product of its digits is 1866240, while the sum is 51.

The square root of 9838621365 is about 99189.8249065901. The cubic root of 9838621365 is about 2142.7824583907.

The spelling of 9838621365 in words is "nine billion, eight hundred thirty-eight million, six hundred twenty-one thousand, three hundred sixty-five".