9438737886869 has 4 divisors (see below), whose sum is σ = 9440732131596. Its totient is φ = 9436743642144.

The previous prime is 9438737886857. The next prime is 9438737886887. The reversal of 9438737886869 is 9686887378349.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6093270087025 + 3345467799844 = 2468455^2 + 1829062^2 .

It is a cyclic number.

It is not a de Polignac number, because 9438737886869 - 2³⁶ = 9370018410133 is a prime.

It is a super-2 number, since 2×9438737886869² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9438737886839) 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, 997115264 + ... + 997124729.

It is an arithmetic number, because the mean of its divisors is an integer number (2360183032899).

Almost surely, 2^{9438737886869} is an apocalyptic number.

It is an amenable number.

9438737886869 is a deficient number, since it is larger than the sum of its proper divisors (1994244727).

9438737886869 is a wasteful number, since it uses less digits than its factorization.

9438737886869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994244726.

The product of its digits is 21069103104, while the sum is 86.

The spelling of 9438737886869 in words is "nine trillion, four hundred thirty-eight billion, seven hundred thirty-seven million, eight hundred eighty-six thousand, eight hundred sixty-nine".